Analysis of nutrient composition and phytochemicals of wild yams Dioscorea pentaphylla L. and Dioscorea oppositifolia Griseb.

Singaravelan Vivek and Segar Prakash

Abstract
Yam is common name for the genus Dioscorea and considered as good sources of essential dietary nutrients. It has nutritional superiority over the tropical root crops. Understanding the nutritional values of yams, the nutrient contents of two yams, Dioscorea pentaphylla and Dioscorea oppositifolia have been analysed in the present study. During the study, the higher amount of moisture, crude protein, nitrogen, free sugars and buffer protein were estimated and analysed. The rich carbohydrate and calorific value, higher amount of fat and amino acids were observed in D. pentaphylla as compared to D. oppositifolia. The crude fiber and ash contents were comparatively higher in D. oppositifolia. Preliminary phytochemical analysis reveals the presence of alkaloids, flavonoids, glycosides, phenol, reducing sugars, saponins, steroids, tannins and triterpinoids in methanolic extract of both tubers.

Keywords
Buffer protein; Carbohydrate; Moisture; Nutrients; Phytochemical.

DOI
10.21472/bjbs.051019

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References
Abdussalam, A. K.; Jathina, M.; Jamsheena, K.; Ratheesh Chandra, P. Phytochemical analysis and GC-MS study of Dioscorea (yam) in Wayanad District-Kerala State. International Journal of Innovation Sciences and Research, v. 5, no. 1, p. 588-595, 2016.

AOAC - Association of Official Analytical Chemists. Official methods of analysis. 11. ed. AOAC, 1970.

Arinathan, V.; Mohan, V. R.; Britto, A. J.; Murugan, C. Wild edibles used by Palliyars of the Western Ghats, Tamil Nadu. Indian Journal of Traditional Knowledge, v. 6, no. 1, p. 163-168, 2009.

Baquar, S. R.; Oke, O. L. Protein Nigerian yams (Dioscorea spp.). Nutritional Report International, v. 14, p. 237-248, 1976.

Basha, S. M. M.; Cherry, J. P.; Young, C. T. Changes in free amino acids, carbohydrates and proteins of maturity seeds from various peas (Arachis hypogaea) cultivars. Cereal Chemistry, v. 53, p. 583-597, 1976.

Bastos, M. L. A.; Lima, M. R. F.; Conserva, L. M.; Andrade, V. S.; Rocha, E. M. M.; Lemos, R. P. L. Studied on the antimicrobial activity brine shrimptoxiity of Z. tuberculosa extract and their main constituents. Annals of Clinical Microbiology and Antimicrobials, 8:16, 2009. https://doi.org/10.1186/1476-0711-8-16

Boussaada, O.; Chriaa, J.; Nabli, R.; Ammar, S.; Saidana, D.; Mahjoub, M. A. Antimicrobial and antioxidant activities of methanol extracts of D. pentaphylla growing wild in Tunisia. World J. Microbiol. Biotechnol., v. 24, p. 1289-1296, 2008.

Brain, K. R.; Turner, T. D. The practical evolution of phytochemicals. Wright Scientechina, Bristol, p. 57-58, 1975.

Ciulci, I. Methodology for the analysis of vegetable drugs. Romania: Chemical Industries Branch, Division of Industrial Operations, 1994.

Finar, I. L. Stereochemistry and the chemistry of natural products. Organic Chemistry, v. 2, p. 769-771, 2003.

Gafner, S.; Woffender, J. L.; Nianga, M.; Hostettmann, K. Naphthaquinone from roots Newbouldia laevis. Phytochemistry, v. 48, no. 1, p. 215-216, 1998.

Gokhale, S. B.; Kokate, C. K.; Purohit, A. P. A text book of Pharmacognosy. India: Naiali Prakashan, Maharashtra, 2008.

Guptha, A. K.; Neeraj, T.; Sharma, M. Quality standards of Indian Medicinal Plants. New Delhi: ICMR, 2005. v. 3.

Hulme, A. C.; Narain, R. The ferricyanide method for the determination of reducing sugars: A modification of the Hagedorn-Jensen-Hanes Technique. Biochem. J., v. 25, no. 4, p. 1051-1061, 1931.

Humphries, E. C. Mineral components and ash analysis. In: Paech, K.; Tracey, M. V. (Eds.). Modern methods of plant analysis. Berlin: Springer, 1956. v. 1. p. 468-502.

Kouakou, M.. D.; Dabonne, S.; Guehi, T.; Kuoame, L. P. Effects of post-harvest storage on some biochemical parameters of different parts of two yams species (Dioscorea spp.). African Journal of Food Science and Technology, v. 1, p. 1-9, 2010.

Krishnamurthy, K. V. Methods in plant histochemistry. Chennai: S. Vishwanathan Printers and Publishers, 1988.

Liu, W. C.; Kugelman, M.; Wilson, R. A.; Rao, K. V. A crystalline saponin with anti-tumor activity from Entada phaseoloides. Phytochemistry, v. 11, no. 1, p. 171-173, 1972. https://doi.org/10.1016/S0031-9422(00)89984-7

Mehrangiaz, K. K.; Seyed, A. E.; Masoud, S. G.; Esmaeel, A. S.; Amirhossein, S. Antiviral activity of aerial subsets of Artemisia species against Herpes simplex virus type1 (HSV1) in vitro. Asian Biomed., v. 5, no. 1, p. 63-68, 2001.

Mullor, H. G.; Tobin, G. Nutrition and food processing. London: Croom Helm, 1980.

Nie, G. H.; Zhou, K. F.; Dong, X. H.; Zhang, C. Research advance of Chinese yam. Traditional and Herbal Drugs, v. 24, p. 158 160, 1993.

Pramila, S. S.; Kumar, A.; Raghuvanshi, R. Nutrient composition of some uncommon foods consumed by Kumaon and Garhwal Hill subjects. Journal of Food Science and Technology, v. 28, p. 237-238, 1991.

Rajyalakshmi, P.; Geervani P. Nutritive value of the foods cultivated and consumed by the Tribals of South India. Plant Foods for Human Nutrition, v. 46, p. 53-61, 1994.

Ravichandran, H.; Magesh, A. Phytochemical analysis of two medicinal plants Dicorea bulbifera and Apium graveooslons. International Journal of Pharmaceutical Sciences Review and Research, v. 33, no. 1, p. 344-347, 2015.

Roy, A.; Geetha, R. V. Preliminary phytochemical screening of the ethanolic extract of Dioscorea villosa tubers and estimation of Diosgenin by HPTLC Technique. International Journal of Drug Development and Research, v. 5, no. 3, p. 377-381, 2013.

Sadasivam, S.; Manickam A. Biochemical methods. Delhi: New Age International, 1996.

Salkowski, F. B.; Ross, C. Plant physiology. California: Wadsworth, 1991.

Shanthakumari, S.; Mohan, V. R.; Britto, A. J. Nutritional evaluation and elimination of toxic principles in wild yam (Dioscorea spp.). Tropical and Subtropical Agroecosystems, v. 8, p. 319-325, 2008.

Sofowora, A. Medicinal plants and traditional medicines in Africa. New York: John Wiley and Sons, 1993.

Udensi, E. A.; Oselebe, H. O.; Iweala, O. O. The investigation of chemical composition and functional properties of water yam (Dioscorea alata): Effect of varietal differences. Pakistan Journal of Nutrition, v. 7, p. 342-344, 2008.

Vidyarthi, L. P. Role of forest in tribal life. In: Sinha, S.P. (Ed.). Tribals and forests. Ranchi: Bihar Tribal Welfare Research Institute, 1987.

Yang, D. J.; Lin, J. T. Effects of different storage conditions on steroidal saponins in yam (Dioscorea pseudojaponica) tubers. Food Chemistry, v. 110, p. 670-677, 2008.