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Untapped potential of non-conventional rubus species: bioactivity, nutrition, and livelihood opportunities

Plant Methods volume 19, Article number: 114 (2023) Cite this article

Abstract

Rubus species holds promise as a valuable source of polyphenols and bioactive compounds, offering significant potential as functional food ingredients with both nutraceutical and pharmaceutical benefits. However, many edible species within this genus remain under-explored and their importance is largely unrecognized. This review aims to provide an overview of the nutritional and bioactive components of both explored and under-explored Rubus species, highlighting their potential health advantages, value addition, and recent advancements. The economic exploitation of Rubus is currently limited to a few cultivated species, while numerous non-conventional and wild edible species are overlooked. Recognizing the economic and nutritional significance of exploited Rubus species, it is imperative to explore the untapped potential of these underutilized plants. By doing so, these species can be preserved from endangerment and contribute to nutritional and livelihood security for communities having access to them. This review emphasizes the importance of understanding the exceptional characteristics of Rubus species as "superfoods" and encourages the promotion and cultivation of these unexplored species. By expanding the cultivation and utilization of under-explored Rubus species, we can unlock their full potential and support sustainable nutritional and economic benefits.

Introduction

The Rubus genus is part of the Plantae kingdom and Rosaceae family. It is widely distributed across the world and exists at 4500 m from sea level [1]. It is a diverse group of plants that includes a variety of species such as Himalayan berries (Rubus ellipticus), blackberries (Rubus fruticosus), raspberries (Rubus ideaus), dewberries (Rubus flagellaris), and so on. Rubus is a genus comprising 12 subgenera that also covers a diverse range of wild species [2]. While the genus comprises more than 700 species but among them, only a few are commercialized including black raspberry (Rubus occidentalis), red raspberry (Rubus ideaus L.), raspberry (Rubus chingii Hu), and blackberry (Rubus fruticosus L.) [3]. Most of the plants in the genus such as R. ellipticus, R. nives, and R. ulmifolius contain woody stems with prickles like roses. Many of the species in this genus, including raspberry, black raspberry, and Himalayan raspberry are widely consumed as fruits and they are valued for their sweet, juicy fruits that are high in vitamins, minerals, and antioxidants. Fruits are commonly used for a variety of purposes, including fresh consumption, juice production, and the preparation of jams, jellies, and syrups. To date, there is a lack of practical evidence to support the notion that species within the Rubus genus possess toxic properties. Most of these plants have common characteristics like spines, bristles, and gland-tipped hairs. The phenomenon of hermaphroditism, characterized by the presence of both male and female reproductive organs, is seen in the most of species within the Rubus genus, except Rubus chamaemorus [1]. These species have gained popularity for their industrial exploitation, while some species hold significant value but are not fully utilized. Even at present, some researcher has mentioned R.ideaus and R.fruticosus as wild variety [4, 5], however, the proper research and value addition of these varieties made them a good source of nutraceutical and pharmaceutical products. Similarly, it is important to conduct similar work for the other non-conventional plants within the genus to raise awareness about the benefits these underexplored varieties provide.

Non-conventional edible plants are categorized as the plants which are non-popular in the human diet or animal fodder, and they can be called “plants of the future”, “alternative food plants”, “Famine foods”, “Wild edible plants”, “traditional vegetables” [6] as they are said to have nutritious and medicinal values that play an important function in the human diet [7]. The use of these plants is said to be very specific to an individual community or being neglected [6]. The modern livelihood lacks knowledge about the importance of these fruits and the circulation of awareness, using factors such as field trips, potential research, or social media, to tell people about the potential health benefits of non-conventional plants may be an interesting strategy to promote human nutritional variations. Wild fruits and semi-wild fruits can be considered into the category of non-conventional edible plants. These plants grow naturally in forests, and discarded lands. The non-conventional (wild) Rubus species include species such as Rubus rosifolius (west Indian Raspberry) [7], Rubus liebmanni [8], Rubus palmeri [9], Rubus ellipticus (Himalayan raspberry) [10], Rubus macilentus (Lean Raspberry) [11], etc. In India, Rubus assamensis (Assam Raspberry), Rubus biflorus (Two-Flower raspberry), Rubus calycinoides (Darjeeling Raspberry), Rubus ellipticus (yellow Himalayan Raspberry), Rubus indicus (Indian Raspberry), Rubus macilentus (Lean Raspberry), Rubus moluccanus (wild Raspberry), Rubus nepalensis (Nepalese Raspberry), Rubus niveus (Mysore Raspberry), Rubus paniculatus (Heart-leaf Raspberry), Rubus pedunculosus (Three leaf raspberry), Rubus rosifolius (Roseleaf bramble), Rubus Rosifolius var. coronarius (Roseleaf Raspberry), and Rubus ulmifolius (Elm-Leaf Raspberry) are some of the commonly found species (https://www.flowersofindia.net/) but commercialization of these are not popular in the industry or individual communities. To the best of our knowledge, no review has yet presented the bioactive components and their applications, value addition, and recent developments of Rubus species. As such the current review intends to describe the chemical and bioactive components of both explored and under-explored fruits and other plant parts of the Rubus species, including their potential health benefits the related mechanism of action of compounds, and recent advancements. The current work is designed to promote the cultivation of underutilized species of this genus as some of the plants of the same genus are well explored for their nutraceutical properties and their value-added products provide livelihood security. Additionally, it provides a comparison of the Rubus genus's cultivated species with some of its less-studied non-cultivated species, highlighting their commercial value and potential for securing livelihoods.

Approaches for data collection

For the collection of data, a systematic review was conducted using the Scopus and Google Scholar databases. The initial search was based on using various keywords which resulted in a total of 2,690 papers for "Rubus" and "Nutraceutical" and "Pharmaceutical", 38 papers for "Rubus" and "Pharmacological application" and "Bioactive", 174 papers for "Rubus" and "Nutraceutical" and "Livelihood", 1,680 for "Rubus" and "Non-conventional" and 311 for “Rubus” and “Superfood” using google scholar database. Similarly, for the Scopus database using the keywords "Rubus" and "Non-conventional" resulted in 5 papers, "Rubus" and "Pharmacological application" and "Bioactive" resulted in 1 paper, "Rubus" and "nutraceutical" and "livelihood" resulted in 1 paper, "Rubus", and "Nutraceutical" resulted in 106 papers. The further screening process is given in Fig. 1.

Fig. 1
figure 1

Approaches for data collection for the current review

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Traditional applications

Various parts of the plant have been used in traditional medicine to treat different ailments such as digestive problems, skin irritations, diabetes, and fever. Rubus species has been used for a long time due to its medicinal properties. Blackberry stems and leaves are used traditionally for wound healing properties, while R. chingii fruits are used to improve kidney and liver health [3]. The fruit's antibacterial and anti-inflammatory properties make it a popular choice for natural remedies. The roots of the plant are used in the treatment of jaundice [12]. Rubus species are considered to have exceptional nutritional value due to the presence of various bioactive compounds such as tannins, phenols, organic acids, and polyphenols [1, 13] that are useful in various health-promoting-effects, the bioactive constituents from the bark of Rubus species used in cosmetic products [3] due to their sun protection and antioxidant activities [14].

The industrial importance of the Rubus genus

Food and beverages

The fruit is usually consumed fresh, but can also be used to make jams, jellies, fruit juices, toppings, and other confectionery products [15]. The high concentration of secondary metabolites such as phenolics, flavonoids, and terpenoids in the Rubus species is what contributes to their classification as "superfoods". Its’ high sugar and carbohydrate contents make it an ideal choice in beverages. In contrast to the most recent study by Liu et al. [16] to make wine using immobilized yeast and free yeast by using red raspberry as substrate. They compared the analysis of both wines based on various properties such as anthocyanin, reducing sugar, and polyphenols. Based on their results the wine made with immobilized yeast resulted in 15% yield and showed better results with total acid 1.6438%, anthocyanins 111.604 mg L−1, and polyphenol 565.67 mg L−1. Furthermore, their study shows that the sugar consumption rate of immobilized yeast is better than that of free yeast. The fruits belonging to this genus are loaded with various nutritional benefits (Table 1), which are highly perishable and are prone to spoilage, therefore need to be processed for the production of value-added preserved products to take advantage of their nutritional properties.

Table 1 Nutritional information of some Rubus species (per 100 g) dry weight
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Figure 2 shows the online available literature on Google Scholar (using the keyword “Rubus species_name”) which can be used to get information about the work being done on different species. It shows that the most explored species among them is R. idaeus (red raspberry). Furthermore, it can be helpful to identify the wild species that need attention to prevent these species from being extinct, until the value addition/similar work as red raspberry of these species is not conducted, people will not understand their benefits.

Fig. 2
figure 2

Graphical representation of available literature of different species Rubus

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Bioactive components in Rubus species

Rubus genus exhibits a wide range of secondary metabolites such as phenols, flavonoids, and polyphenols, which depending on the species can vary significantly. The variation in concentrations of bioactive components usually depends upon different factors such as location, cultivar, temperature, etc. [23]. This variation can also be observed among different cultivars of the same species and may also differ depending on the location where the plant is grown. For example, According to a study conducted by Bobinait et al. [24] to find the variations in phytochemicals in 19 raspberry cultivars (Black raspberry ‘Bristo’, ‘Putnica’, yellow raspberry ‘Beglianka’ ‘Meeker’, ‘Norna’, ‘Nov-okitaevskaja’, ‘Benefis’, ‘Aborigen’, ‘Glen Moy’, ‘Mirazh’, ‘Lashka’, ‘Siveli’, ‘Polesie’, ‘Husar’, ‘Polana’,‘Polka’, ‘Zorinka’, ‘Ottawa’ and ‘Pokusa’,) from Lithuania. The result of the study showed that the amount of ellagic acid ranged from 119.8 mg 100 g−1 (Pokusa) to 323.5 mg 100 g−1 (Bristol), while total phenolics varied from 278.6 g 100 g−1 (Pokusa) to 714.7 mg 100 g−1 (in Bristol). The range of total anthocyanins was from 2.1 mg 100 g−1 (Begliianka) to 325.5 mg 100 g−1 (Bristol). On the other hand, blackberries were found to contain phenolics 241.7 mg 100 g−1 of fruit especially anthocyanins 90.5 mg 100 g−1 of fruit and carotenoids 84.5 mg 100 g−1 of fruit [25]. Similarly, (50.16 mg Gallic Acid Equivalents(GAE) g−1 dw) polyphenolics, (7.73 mg Quercetin equivalent (Qc) g−1 dw) flavonoids, and (13.40 mg Cyanidin equivalents (Cy) g−1) anthocyanins were reported in the pomace of Rubus fruticosus [26]. Various analytical techniques are used by many researchers to study the plant chemistry. Mertz et al. [27] used high-performance liquid chromatography with ionization mass spectrometric detection (ESI–MS) and diode array (DAD) in Rubus glaucus Benth. and Rubus adenotrichus Schlech. from South America and identified many ellagitannins, anthocyanins, and ellagic acids. Similarly, Mertz et al. [28] identified anthocyanins, catechins and ellagic acid derivatives, flavonols, and other compounds from red raspberry and blackberry using HPLC methods( ProStar 330 photodiode array detector, and ProStar 230 solvent delivery module). Similar to these studies many available studies show the presence of various bioactive compounds (Table 2) mostly involving chromatographic analysis [29,30,31] within the genus.

Table 2 Classification of bioactive compounds in various Rubus species
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Ellagic acid, gallic acid, chlorogenic acid, ferulic acid, m-coumaric acid, 4-hydroxybenzoic acid, 3-hydroxybenzoic acid, vanillic acid, trans-cinnamic acid, phloridzin, caffeic acid, cyanin, delphinidin, β-carotene, ascorbic acid, 4-dimethylamino-2,2,6,6-tetramethyl piperidine are some the common compounds (Table 3) that are found in Rubus species fruits [37, 38]. The presence of amino acids such as L-hydroxyproline, DL-2aminobutriyic acid, DL valine, DL Iso-leucine, L-Cysteine hydroxyl, DL alanine, DL-nor-leucine, L-glutamic acid, DL-aspartic acid, L-arginine, DL-aspartic acid, L-cysteinhydroxychloride, L leucine, DL-methionine, L-Lysine, DL-threonine, L-tyrosine have also been reported in Rubus ellipticus [10].

Table 3 Commonly found phytocompounds of Rubus species and their applications
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The Fig. 3 depicts a schematic representation of various phytochemicals found in Rubus species and their respective mechanism of action. Ferulic acid, gallic acid, caffeic acid, ellagic acid, delphinidin, and chlorogenic acid play a significant role as anti-inflammatory agents by inhibiting the responsible factor NF-κB. Similarly, caffeic acid, ferulic acid, and vanillic acid show anti-inflammatory activity by inhibiting the HIF-1α while the role of ascorbic acid as an antioxidant, and caffeic acid, as an anticancer agent works by inhibiting the ROS generation and preventing DNA damage and mutation[34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59].

Fig. 3
figure 3

Mechanism of action of various phytocompounds of Rubus species The figure depicts a schematic representation of various phytochemicals found in Rubus species and their respective mechanism of action; VEGF vascular endothelial growth factor, HIF hypoxia inducing factor, ROS reactive oxygen species, NO nitric oxide, iNOS inducible nitric oxide synthase

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Medicinal importance

The medicinal potential of the Rubus genus has been explored by many researchers and it is not only limited to its fruits. Phytochemical analysis of several Rubus species has revealed the presence of various compounds such as polyphenols, flavonoids, and anthocyanins. Previous research has shown that this species contains a compound with antioxidant properties, leading to overall health benefits. It has been reported to have anti-inflammatory, analgesic, antipyretic, antidiabetic, anti-tumor, wound-healing, anti-cancer, and antibacterial effects [1, 65, 66]. The plant has been used for many generations in the treatment of various ailments such as gastrointestinal illness, diabetes, bacterial and fungal infections, wound healing, and ulcers [1].

Antidiabetic activity

Boscaro et al. [67] have mentioned that pre-diabetic women with insulin resistance and obese, metabolically healthy individuals who consumed red raspberries, and Rubus ellipticus ethanolic extracts of fruits respectively exhibited a reduction in peak glucose and insulin levels, as well as lower 2-h glucose area under the curve and improved glucose tolerance in rats [68]. This antihyperglycemic effect is achieved through various mechanisms, including β-cell regeneration, glucose-load reduction, increased insulin action and secretion, and receptor activation, resulting in improved blood sugar uptake and peripheral glucose consumption [69]. Furthermore, the extract from Rubus fruit has been found to exhibit hypoglycemic effects and enhance insulin sensitivity in Sprague Dawley rats, while also promoting lipid catabolism in adipose tissue, with a more pronounced effect observed in female rats [70]. Additionally, the gut metabolites of blackberries have been found to increase the consumption of glucose and glycogen content and improve high glucose plus palmitic acid-induced ROS overproduction, mitochondrial membrane damage, and glutathione depletion in HepG2 cells [71]. The intake of R. idaeus L. fruit has also been reported to have antidiabetic effects and is effective against oxidative stress associated with type 2 diabetes in mice by enhancing glutathione peroxidase(GPx)/superoxide dismutase(SOD) ratio and preventing oxidative stress [72]. Safarzad et al. [73] investigated the effects of a leaf extract from R. anatolicus in CRI-D1 cell line and conveyed that the extract helps to improve the consumption and uptake of glucose while enhancing the secretion of insulin in pancreatic cells. The finding of Ayele et al. [74] shows that the leaf extract of Rubus erlangeri exhibits significant effects on lowering the blood glucose level without weight loss and hypoglycemia.

Antioxidant activity

Several studies have investigated the antioxidant and antimicrobial activities of Rubus plants. Matawali & Azlan [75] reported that the leaves of the plant exhibited the highest antioxidant capacity compared to other plant parts, with the methanol extract showing the highest antioxidant activity. According to their study, the total phenolic content (56.32 ± 0.05 mg/ (GAE)/g) and total flavonoid content (31 ± 1.05 mg Catechin equivalents (CE)/g) were found to be higher in the leaves while the total anthocyanins content (22.27 ± 1.28 × 10–14 mg cyanidin-3-glucoside equivalent (C-3-GE) /g) and total carotenoid content (10.02 ± 0.22 mg β-carotene equivalents (BC)/g) was found higher in fruits. The presence of various secondary metabolites is responsible for various types of pharmacological activities, in contrast, the radical scavenging activity of Rubus species(Raspberry, and blackberry) leaves using DPPH assay was found 105.2 mg Ascorbic Acid Equivalents (AAE)/g for raspberry while 152 mg AAE/g for blackberry leaves [76].

Antibacterial activity

Saini et al. [77] reported that fruits of R. ellipticus did not show any antibacterial effects against Staphylococcus aureus, Bacillus subtilis, and Escherichia coli. On the contrary Velićanski et al. [78] found that fruits of Rubus idaeus exhibited antibacterial activity against Pseudomonas aeruginosa and Bacillus cereus. Kumar et al. [79] observed that the extract of R. ellipticus fruit in methanol, hydro-alcohol, and hexane had significant antimicrobial activity against Micrococcus luteus, Escherichia coli, Salmonella abony, Staphylococcus epidermidis, Aspergillus niger, and Candia albicans.

Anti-cancerous activity

Velićanski et al. [77] have demonstrated the ability of R.ellipticus fruit extract to inhibit cell proliferation in two cervical cancer cell lines (C33A and HeLa) and a normal cell line Peripheral Blood Mononuclear Cells (PBMCs) using MTT assays. The results showed that the extract had strong antiproliferative effects on C33 cells in a dose-dependent manner, while no inhibitory effect was observed against HeLa cells. Additionally, the extracts did not exhibit any cytotoxic effects on PBMCs and instead promoted their growth. These findings indicate that R.ellipticus fruits have selective anticancer properties against cervical cancer cells while being non-toxic to normal cells. The methanol and acetone extracts were more effective than acidic extracts, with lower EC50 values against C33A cells [77]. Anticancer properties of R.chingi was observed by Li et al. [80], their results showed that R.chingi showed potent antioxidant properties and could inhibit the growth of T24 bladder cancer cell in a dose-dependent manner by inducing apoptosis. It has been reported that the extract obtained from Rubus fruits can inhibit the proliferation of several human tumor cell lines, including oral (KB, CAL-27), colon (HT-29, HCT116), breast (MCF-7), and prostate (LNCaP) cells. The study also demonstrated the efficacy of the extract in inducing apoptosis in a colon cancer cell line expressing COX-2 [81].

Livelihood security

Red and black raspberries, blueberries, and blackberries are the most economically important Rubus species grown for the fresh market and processing. In 2017, the global production of red and black raspberries was 840,000 tonnes, with Europe and the Americas being the top producers [2]. In the year 2020, the production of raspberries was found to dominate over strawberries and blackberries [82]. In 2020 the topmost imported fruits from Mexico were avocados and berries including blueberries strawberries and raspberries. These fruits collectively made up around 1/3 (32%) of the total value of imported fruits from Mexico. Among these fruits blueberries show the most significant growth in imports, increasing from 6 million USD to 352 million USD during the same period. It shows the increasing dependency of people on berries. Non-conventional fruits can be a good source of alternative income. Hence Rubus species can also provide livelihood opportunities for many people as they can be cultivated commercially or collected from the wild. This may provide a source of income for farmers, small-scale growers, and forgers. In India, non-conventional fruits (wild fruits) have a significant impact in terms of fulfilling the food and cash income needs of rural, poor, and tribal populations [83]. Similarly, in Ecuador, the cultivation of R. glaucus has also been shown to contribute to the livelihood of a substantial number of medium and small-scale producers, with an estimated 12,000 individuals benefiting from this [84]. Jalisco, Mexico is the main producer of raspberry and blackberry at the national level. Hence the wild species of Rubus also needs to be explored for its nutritional and nutraceutical properties. The preservation of germplasm and promotion of conventional cultivation for wild species of Rubus can provide economic advantages, as well as nutritional and livelihood security, further, the use of Rubus species can be explored for industrial purposes and value addition.

Value addition and industrial aspects

Rubus species has a long history of use for both food and medicinal purposes. Chutney made from blackberry was found to have reduced anthocyanins, phenolics, and antioxidants compared to the pulp but were still well-accepted in sensory analysis [85]. A study by Felix da Silva et al. [86] investigated changes in phenolic compounds and antioxidant activity during the storage of jam, coulis, and purees made from Brazilian cultivar blackberries. The results showed a decrease in total phenolic content in jam but an increase in antioxidant activity, suggesting the potential for chemical transformation of compounds with higher antioxidant activity. Similarly, Souza et al. [87] combined black, red, and yellow raspberries to make jellies and found that the sensory acceptability of these jellies was higher than jellies made from 100% black or yellow berries. Berries are also good sources of carbohydrates, making them suitable for use in alcoholic beverage production. Red raspberry and arbutus berries have been used as substrates in fermentation for producing safe, high-quality beverages without adverse health effects from methanol concentrations [88]

Industrial processing of berries into value-added products generates another by-product (which is mostly seeds) called pomace. Typically, this by-product is considered waste although it contains crucial bioactive compounds and unsaturated fatty acids such as (PUFAs) [15] and can be transformed into value-added products such as functional and nutraceutical food products [36]. It was reported that raspberry pomace contains around 77.5% of the total dietary fiber of total fruit [89]. Some researchers have mentioned creating additional products from the berry pomace. Tarasevičienė et al. [90] and Peiretti et al. [91] have made patties using berry pomace. Both studies concluded that the pomace helps to obtain desirable changes in the product and acts as a thickener while delaying the oxidation of lipids.

Recent developments and future outcomes

There are several ongoing research in Rubus species. Some of the developments related to the Rubus genus including advances in breeding [92], making value-added products [93], preservation methods [94], and synthesis of nanoparticles [95, 96] are summarized in Table 4. The future outcome for this genus involves Post-harvest management methods to avoid waste during the processing of Rubus into by-products as the fruits are delicate and prone to damage. Additionally, there are opportunities to develop by-products using plant parts such as fruits, leaves, and pomace. For example, pomace can be reused as animal feed, biofuel production, and composting. Furthermore, the genetic diversity of this genus needs a deeper understanding. Current breeding and commercialization efforts mostly involve a few well-known species like black raspberry, and red raspberry, exploring other underutilized plants of this genus can pave new pathways that can potentially enrich the food plate while expanding the germplasm archival of this group.

Table 4 Recent research and development related to Rubus species
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Conclusion

The wide range of genetic diversity in Rubus species holds significant promise for creating value-added products, making them a compelling alternative to conventional types, such as raspberry, and blackberry, in diverse fields. In conclusion, the review of the scientific literature on Rubus species highlights the potential of fruit as a source of bioactive compounds with diverse health benefits. The fruit has been reported to possess antidiabetic antioxidant, antibacterial, and anti-cancerous effects, which can be attributed to its polyphenols, anthocyanins, and other phytochemicals. These properties are beneficial for both the pharmaceutical and food industry. Moreover, the fruit can be processed into jams, jellies, and other confectionary food products due to its unique flavor and aroma. The popularity and the market demand of the fruits from cultivated species of Rubus genus is increasing day by day due to their nutritional and industrial importance. The fruits of the Rubus genus that are more popular, such as red raspberry, and blue raspberry, have increasing demand daily, while the wild, edible, non-conventional fruits are limited to local livelihood. Non-conventional fruits of the same genus are limited to the local livelihood. A better understanding of the wild varieties of this genus, such as R.ellipticus, R.paniculatus, and R.ulmifolius, etc. Although many species of Rubus are globally cultivated and well-explored for their nutraceutical properties and industrial aspects, there are still some commercially unexplored species, including R.ellipticus, R.niveus, R.paniculatus, R.fraxinifolius, R.pyrifolius, R.chrysophyllus, R.lineatus, etc. that needs more attention. This is especially important as these fruits are seasonal and are available for a limited period. Although the available research has established the potential benefits of Rubus species, still at the industrial level there are only some major species that are being used for their value addition. Since the wild species do not contribute to the economy, people have started to ignore their existence, or only use them within individual communities. If this continues these species will fall into the endangered categories. Further studies are required to explore its full therapeutic and industrial potential.

Availability of the data and materials

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Acknowledgements

Author BN is thankful to the Uttarakhand Council for Science and Technology (UCOST) for providing financial support (UCS&T/R&D-26/22-23/21213/1) to carry out the research.

Funding

Author BN is thankful to the Uttarakhand Council for Science and Technology (UCOST) for providing financial support (UCS&T/R&D-26/22-23/21213/1) to carry out the research.

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Author notes

  1. Bindu Naik and Vijay Kumar are equality contributed.

Authors and Affiliations

  1. Department of Food Science and Technology, Graphic Era (Deemed to Be University), Bell Road, Clement Town, Dehradun, 248002, Uttarakhand, India

    Saurav Chandra Bhatt, Bindu Naik, Arun Kumar Gupta & Sanjay Kumar

  2. Himalayan School of Biosciences, Swami Rama Himalayan University, Jolly Grant, Dehradun, 248016, Uttarakhand, India

    Vijay Kumar

  3. School of Agriculture, Graphic Era Hill University, Clement Town, Dehradun, Uttarakhand, India

    Manpreet Singh Preet

  4. World Resources Institute India, Hauz Khas, New Delhi, 110016, India

    Nitya Sharma

  5. Department of Food Technology, UCALS, Uttaranchal University, Dehradun, Uttarakhand, India

    Sarvesh Rustagi

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  1. Saurav Chandra Bhatt
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Contributions

BN, VK: conceptualization, analyzed the data, wrote the original draft, reviewed the manuscript, SCB, AKG, VK: analyzed the data, writing the original draft. All the authors read the manuscript and approved it in its final form.

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Bhatt, S.C., Naik, B., Kumar, V. et al. Untapped potential of non-conventional rubus species: bioactivity, nutrition, and livelihood opportunities. Plant Methods 19, 114 (2023). https://doi.org/10.1186/s13007-023-01094-y

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Plant Methods

ISSN: 1746-4811