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Vol.2 , No. 1, Publication Date: Jan. 27, 2015, Page: 1-8
: A Review&description=Okra (Abelmoschus esculentus) is an important vegetable crop grown in tropical and sub-tropical parts of the world. This paper was aimed to review nutritional quality and potential health benefits of edible parts of Okra. Okra is a multipurpose crop due to its various uses of the fresh leaves, buds, flowers, pods, stems and seeds. Okra immature fruits, which are consumed as vegetables, can be used in salads, soups and stews, fresh or dried, fried or boiled. It offers mucilaginous consistency after cooking. Okra mucilage has medicinal applications when used as a plasma replacement or blood volume expander. The mucilage of okra binds cholesterol and bile acid carrying toxins dumped into it by the liver. Okra seeds are a potential source of oil, with concentrations varying from 20% to 40%. Okra seed oil is also a rich source of linoleic acid, a polyunsaturated fatty acid essential for human nutrition. Okra has been called “a perfect villager’s vegetable” because of its robust nature, dietary fiber, and distinct seed protein balance of both lysine and tryptophan amino acids. The amino acid composition of okra seed protein is comparable to that of soybean and the protein efficiency ratio is higher than that of soybean and the amino acid pattern of the protein renders it an adequate supplement to legume or cereal based diets. Okra seed is known to be rich in high quality protein especially with regards to its content of essential amino acids relative to other plant protein sources. Okra is a powerhouse of valuable nutrients, nearly half of which is soluble fibre in the form of gums and pectins which help to lower serum cholesterol, reducing the risk of heart diseases. The other fraction of Okra is insoluble fibre, which helps to keep the intestinal tract healthy. Okra is also abundant with several carbohydrates, minerals and vitamins, which plays a vital role in human diet and health. Okra is rich in phenolic compounds with important biological properties like quartering and flavonol derivatives, catechin oligomers and hydroxycinnamic derivatives. Okra is also known for being high in antioxidants activity. Okra has several potential health beneficial effects on some of the important human diseases like cardiovascular disease, type 2 diabetes, digestive diseases and some cancers. Overall, Okra is an important vegetable crop with a diverse array of nutritional quality and potential health benefits.&picture=http://www.aascit.org/aascit/decorators/img/journal/907.jpg)
| [1] | Habtamu Fekadu Gemede, Department of Food Technology and Process Engineering, Wollega University, Nekemte, Ethiopia; Center for Food Science and Nutrition, Addis Ababa University, Addis Ababa, Ethiopia. |
| [2] | Negussie Ratta, Department of Chemistry, Addis Ababa University, Addis Ababa, Ethiopia. |
| [3] | Gulelat Desse Haki, Department of Food Science and Technology, Botswana Collage of Agriculture, Botswana University, Gaborone, Botswana. |
| [4] | Fekadu Beyene, Department of Food Technology and Process Engineering, Wollega University, Nekemte, Ethiopia. |
| [5] | Ashagrie Z. Woldegiorgis, Center for Food Science and Nutrition, Addis Ababa University, Addis Ababa, Ethiopia. |
Okra (Abelmoschus esculentus) is an important vegetable crop grown in tropical and sub-tropical parts of the world. This paper was aimed to review nutritional quality and potential health benefits of edible parts of Okra. Okra is a multipurpose crop due to its various uses of the fresh leaves, buds, flowers, pods, stems and seeds. Okra immature fruits, which are consumed as vegetables, can be used in salads, soups and stews, fresh or dried, fried or boiled. It offers mucilaginous consistency after cooking. Okra mucilage has medicinal applications when used as a plasma replacement or blood volume expander. The mucilage of okra binds cholesterol and bile acid carrying toxins dumped into it by the liver. Okra seeds are a potential source of oil, with concentrations varying from 20% to 40%. Okra seed oil is also a rich source of linoleic acid, a polyunsaturated fatty acid essential for human nutrition. Okra has been called “a perfect villager’s vegetable” because of its robust nature, dietary fiber, and distinct seed protein balance of both lysine and tryptophan amino acids. The amino acid composition of okra seed protein is comparable to that of soybean and the protein efficiency ratio is higher than that of soybean and the amino acid pattern of the protein renders it an adequate supplement to legume or cereal based diets. Okra seed is known to be rich in high quality protein especially with regards to its content of essential amino acids relative to other plant protein sources. Okra is a powerhouse of valuable nutrients, nearly half of which is soluble fibre in the form of gums and pectins which help to lower serum cholesterol, reducing the risk of heart diseases. The other fraction of Okra is insoluble fibre, which helps to keep the intestinal tract healthy. Okra is also abundant with several carbohydrates, minerals and vitamins, which plays a vital role in human diet and health. Okra is rich in phenolic compounds with important biological properties like quartering and flavonol derivatives, catechin oligomers and hydroxycinnamic derivatives. Okra is also known for being high in antioxidants activity. Okra has several potential health beneficial effects on some of the important human diseases like cardiovascular disease, type 2 diabetes, digestive diseases and some cancers. Overall, Okra is an important vegetable crop with a diverse array of nutritional quality and potential health benefits.
Keywords
Okra, Nutritional, Quality, Health, Edible, Oil
Reference
| [01] | Naveed, A., Khan, A.A., & Khan, I.A. (2009). Generation mean analysis of water stress tolerance in okra (Abelmoschus esculentus L.). Pak. J. Bot., 41: 195-205. |
| [02] | Oyelade, O.J., Ade-Omowaye, B.I.O., and Adeomi, V.F. (2003). Influence of variety on protein, fat contents and some physical characteristics of okra seeds. J. Food Eng., 57: 111-114. |
| [03] | Andras, C.D., Simandi, B., Orsi, F., Lambrou, C., Tatla, D.M., Panayiotou, C., Domokos, J., & Doleschall. F. (2005). Supercritical carbon dioxide extraction of Okra (Hibiscus esculentus L.) seeds. J. Sci. Food Agric., 85: 1415-1419. |
| [04] | Saifullah, M., & Rabbani, MG. (2009). Evaluation and characterization of okra (Abelmoschus esculentus L. Moench.) genotypes. SAARC J. Agric. 7: 92-99. |
| [05] | Aladele, S.E., Ariyo, O.J. & Lapena, R.de. (2008). Genetic relationships among West African okra (Abelmoschuscaillei) and Asian genotypes (Abelmoschus esculentus) using RAPD. Indian Journal of Biotechnology. 7(10):1426-1431. |
| [06] | Sathish, D., and Eswar, A. (2013). A Review on: Abelmoschus esculentus (Okra). Int. Res J Pharm. App Sci., 2013; 3(4):129-132. |
| [07] | Nzikou, J., Mvoula-Tsieri, M., & Matouba, E. (2006). A study on gumbo seed grown in Congo Brazzaville for its food and industrial applications. African Journal of Biotechnology Vol. 5 (24), pp. 2469-2475. |
| [08] | Tindall, HD. (1983): Vegetables in the tropics. Macmillan Education Limited, London, UK. |
| [09] | Ndunguru, J., & Rajabu, AC. (2004). Effect of okra mosaic virus disease on the above-ground morphological yield components of okra in Tanzania. Scienta Horticulturae, 99: 225-235. |
| [10] | Sorapong Benchasr, (2012). Okra (Abelmoschus esculentus(L.) Moench) as a Valuable Vegetable of the World. Ratar. Povrt. 49:105-112. |
| [11] | Benjawan, C., Chutichudet, P., & Kaewsit, S. (2007). Effect of green manures on growth yield and quality of green okra (Abelmoschus esculentusL) har lium cultivar. Pakistan J. Biological Sci. 10: 1028-1035. |
| [12] | Arapitsas, P. (2008). Identification and quantification of polyphenolic compounds from okra seeds and skins. Food Chem. 110:1041-1045. |
| [13] | Rubatzky, VE., & Yamaguchi, M. (1997): World vegetables: principles, production, and nutritive values. Chapman and Hall, New York, USA. |
| [14] | Qhureshi, Z. (2007). Breeding investigation in bhendi (Abelmoschus esculentus (L.) Moench). Master Thesis, University of Agriculture Sciences, GKVK, Bangalore. |
| [15] | Mihretu, Y., Wayessa, G., & Adugna, D. (2014). Multivariate Analysis among Okra (Abelmoschus esculentus (L.) Moench) Collection in South Western Ethiopia. Journal of Plant Sciences 9(2):43-50. |
| [16] | Madison, D. (2008). Renewing America's Food Traditions. Chelsea Green Publishing. p. 167. |
| [17] | Maramag, R. P. (2013). Diuretic potential of Capsicum frutescens L., Corchorus oliturius L., and Abelmoschus esculentus L. Asian journal of natural and applied science, 2 (1). 60-69. |
| [18] | Calisir, S., & Yildiz, M. U. (2005). A study on some physico-chemical properties of Turkeyokra (Hibiscus esculenta) seeds. Journal of Food Engineering, 68, 73–78. |
| [19] | Adetuyi, F.O., Osagie, A.U., & Adekunle, A.T. (2011). Nutrient, antinutrient, mineral and zinc bioavailability of okra Abelmoschus esculentus (L) Moench Variety. Am. J. Food. Nutr, 2011, 1(2): 49-54. |
| [20] | Sanjeet K., Sokona D., Adamou H., Alain R., Dov P., & Christophe, K. (2010). Okra (Abelmoschus spp.) in West and Central Africa: Potential and progress on its improvement. African Journal of Agricultural Research Vol. 5(25), pp. 3590-3598. |
| [21] | Schalau, J. (2002). Backyard Gardener. Available at http://ag.arizona.edu./yavapai/anr/hort/byg/. |
| [22] | MEF, (2013). Biology of Okra. Series of crop specific biology document. Ministry of Environmental and Forest Government of India. p1-8. |
| [23] | National Research Council, (2006). "Okra". Lost Crops of Africa: Volume II: Vegetables. Lost Crops of Africa. 2. National Academies Press. ISBN: 0-309-66582-5, 378 pages. |
| [24] | Vermerris, W., & Nicholson, R., (2006). Phenolic Compound Biochemistry, Springer, Dordrecht, The Netherlands. |
| [25] | Savello, P. A., Martins, F., and Hull, W. (1980). Nutrition composition of okra seed meals. J. Agric. Food Chem., 28: 1163-1166. |
| [26] | Ewa, C, Agnieszka, G, & Adametal, F. (2011). “The content of protein and of amino acids in Jerusalem artichoke tubers (Helianthus tuberosus L.) of red variety Rote Zonenkugel,” Acta Scientiarum Polonorum, Technologia Alimentaria, vol. 10, no.4, pp.433–441. |
| [27] | Holser, R., & Bost, G. (2004). “Hybrid Hibiscus seed oil compositions,” Journal of the American Oil Chemists’ Society, vol.81,no. 8, pp. 795–797, 2004. |
| [28] | Adetuyi, F., Ajala, L., & Ibrahim, T. (2012). Effect of the addition of defatted okra seed (abelmoschus esculentus) flour on the chemical composition, functional properties and zn bioavailability of plantain (musa paradisiacal linn) flour. JMBFS / Adetuyi et al. 2012 : 2 (1) 69-82. |
| [29] | Ndangui, C.B., Kimbonguila, A., Nzikou, J.M., Matos, L., Pambou, N.P .G., Abena, A.A., Silou, Th., Scher, J., & De sobry, S. (2010). Nutritive Composition and Properties Physico-chemical of gumbo (Abelmoschus esculentu s L.) Seed and Oil. Research Journal of Environmental and Earth Sciences 2(1): 49-54. |
| [30] | Farinde, A., Owolarafe, O., & Ogungbemi, I. (2007). “An overview of production, processing, marketing and utilisation of okra in egbedore local government area of Osun State, Nigeria,” Agricultural Engineering, vol.4, pp.1–17. |
| [31] | Owolarafe, OK., & Shotonde, HO. (2004). Some physical properties of fresh okra fruit. J. Food Engin. 63: 299-302. |
| [32] | Gopalan, C., Sastri, SBV., & Balasubramanian, S. (2007). Nutritive value of Indian foods, National Institute of Nutrition (NIN), ICMR, India. |
| [33] | Kahlon, TS., Chapman, MH., & Smith, GE. (2007). In vitro binding of bile acids by okra beets asparagus eggplant turnips green beans carrots and cauliflower. Food Chem. 103: 676-680. |
| [34] | Akintoye, HA., Adebayo, AG., & Aina, OO. (2011). Growth and yield response of okra intercropped with live mulches. Asian J. Agric. Res. 5: 146-153. |
| [35] | Varmudy, V. (2011). Marking survey need to boost okra exports. Department of economics, Vivekananda College, Puttur, Karnataka, India. |
| [36] | Liu, IM., Liou, SS., Lan, TW., Hsu, FL., & Cheng, JT. (2005). Myricetin as the active principle of Abelmoschus moschatusto lower plasma glucosein streptozotocin-induced diabetic rats. Planta Medica 71: 617-621. |
| [37] | Kumar, R., Patil, MB., Patil, SR., & Paschapur, MS. (2009). Evaluation of Abelmoschus esculentus mucilage as paracetamol suspension. Intl. J. Pharm. Tech. Res. 1:658-665. |
| [38] | Moyin-Jesu, EI. (2007). Use of plant residues for improving soil fertility pod nutrients root growth and pod weight of okra Abelmoschus esculentum L. Bioresour. Tech. 98: 2057-2064. |
| [39] | Cook, JA., Jagt, DJ., Pastuszyn, A., Mounkaila, G., Glew, RS., Millson, M., and Glew, RH. (2000). Nutrient and chemical composition of 13 wild plant foods of Niger. J. Food Comp. Anal., 13: 83-92. |
| [40] | Manach, C., Williamson, G., Morand, C., Scalbert, A., & Remesy, C. (2005). Bioavailability and bioefficacy of polyphenols in humans. Amer. J. Clinical Nutrit., 81: 230-242. |
| [41] | Avallone, S., Tiemtore, TWE., Rivier, CM., & Treche, S. (2008). Nutritional value of six multi-ingredient sauces from Burkina Faso. J. Food Comp. Anal. 21:553-558. |
| [42] | Kendall, CWC., & Jenkins, DJA. (2004). A dietary portfolio: maximal reduction of low-density lipoprotein cholesterol with diet. Current Atherosclerosis Reports 6:492-498. |
| [43] | Agbo, AE., Gnakri, D., Beugre, GM., Fondio, L., & Kouame, C. (2008). Maturity degree of four okra fruit varieties and their nutrients composition. Elect. J. Food Plant Chem. 5:1-4. |
| [44] | Moekchantuk, T., Kumar, P. (2004). Export Okra production in Thailand. Inter-country programme for vegetable IPM in South & SE Asia phase II Food & Agriculture Organization of the United Nations, Bangkok, Thailand |
| [45] | Adelakun, OE., Oyelade, OJ., Ade-Omowaye, BIO., Adeyemi, IA., & Vande, M. (2008). Influence of pre-treatment on yield, chemical and antioxidant properties of Nigerian okra seed (Abelmoschus esculentus Moench) flour: DOI: 10.1016/j.fct.2008.12.023. |
| [46] | Akingbala, JO., Akinwande, BA., & Uzo-Peters, PI. (2003). Effects of color and flavor changes on acceptability of ogi supplemented with okra seed meals. Plant Foods Human Nutr, 58:1-9. |
| [47] | Kumar, S., Dagnoko, S., Haougui, S., Ratnadass, A, Pasternak, D., & Kouame, C. (2010). Okra (Abelmoschus spp.) in West and Central Africa: potential and progress on its improvement. Afr J Agric Res, 5:3590-3598. |
| [48] | Hirose, K., Endo, K., & Hasegawa, K. (2004). A convenient synthesis of lepidimoide from okra mucilage and its growth promoting activity in hypocotyls. Carbohydr. Poly. 339:9-19. |
| [49] | Sengkhamparn, N., Verhoef, R., Schols, HA., Sajjaanantakul, T., & Voragen, AGJ. (2009). Characterization of cell wall polysaccharides from okra (Abelmoschus esculentus (L.) Moench). Carbohydr. Res., 344:1824-1832. |
| [50] | Ebermann, R., Alth, G., Kreitner, M., & Kubin, A. (2006). Natural products derived from plants as potential drugs for the photodynamic destruction of tumor cells. J Photochem Photobiol B. 36(2):95-97. |
| [51] | Ali, A., & Deokule, SS. (2008). Comparison of phenolic compounds of some edible plant of Iran and India. Pak J Nutr, 7(4):582-585. |
| [52] | Middleton, E. (2000). The effects of plant flavonoids on mammalian cells: Implications for inflammation, heart disease and cancer. Pharm Rev, 52:673-751. |
| [53] | Marinova, D., Ribarova, F., & Atanassova, M. (2005). Total phenolics and total flavonoids in Bulgarian fruits and vegetables. J Univ Chem Technol Metallur, 40(3):255-260. |
| [54] | Aman, R., Schieber, A., & Carle, R. (2005). Effects of heating and illumination on trans-cis isomerization and degradation of β-carotene and lutein in isolated spinach chloroplasts. J Agric Food Chem, 53:9512-9518. |
| [55] | Woolfe, ML., Martin, FC., & Otchere, G. (1977). Studies on the mucilages extracted from okra fruits (Hibiscus esculentus L.) and baobab leaves (Adansonia digitata L.). J. Sci. Food Agric. 28:519-529. |
| [56] | Ndjouenkeu, R., Goycoolea, FM., Morris, ER., & Akingbala, JO. (1996). Rheology of okra (Hibiscus esculentus L.) and dika nut (Irvinia gabonensis) polysaccharides. Carbohydrate Polymers 29: 263-269. |
| [57] | BeMiller, JN., Whistler, RL., Barkalow, DG., & Chen, CC. (1993). Aloea, chia, flax seed, okra, psyllium seed, quince seed, and tamarin gums. In: Industrial Gums, Whistler RL, BeMiller JN (eds.), Academic Press, New York, pp. 227-256. |
| [58] | Bhat, UR, & Tharanathan, RN. (1987). Functional properties of okra (Hibiscus esculentus) mucilage. Starch 39:165-167. |
| [59] | Mishra, A., Clark, JH., & Pal, S. (2008). Modification of okra mucilage with acrylamide: synthesis, characterization, and swelling behavior. Carbohydr. Poly. 72: 608-615. |
| [60] | Ofoefule, SI., Chukwu, AN., Anayakoha, A., & Ebebe, IM. (2001). Application of Abelmoschus esculentus in solid dosage forms 1: use as binder for poorly water soluble drug. Indian J. Pharm. Sci. 63: 234-238. |
| [61] | Lengsfeld, C., Titgemeyer, F., Faller, G., & Hensel, A. (2004). Glycosylated compounds from okra inhibit adhesion of Helicobacter pylori to human gastric mucosa. J. Agric. Food Chem., 52: 1495-1503. |
| [62] | Ohr, L. M. (2004). Dietary antioxidants. Food Technology, 58(10), 67–74. |
| [63] | Gosslau, A., & Chen, K.Y. (2004). Nutraceuticals, apoptosis, and disease prevention. Nutrition, 20, 95-102. |
| [64] | Krinsky, N. I. (2001). Carotenoids as antioxidants.Nutrition,17, 815–817. |
| [65] | Davey, M. W., van Montagu, M., Inze, D., Sanmartin, M., Kanellis, A., & Smirnof, F. (2000). Plant L-ascorbic acid: Chemistry, function, metabolism, bioavailability and effects of processing. Journal of the Science of Food and Agriculture, 80, 825–860. |
| [66] | Rossetto, M., Vanzani, P., Mattivi, F., Lunelli, M., Scarpa, M., & Rigo, A. (2002). Synergistic antioxidant effect of catechin and malvidin 3-glucoside on free radical-initiated peroxidation of linoleic acid in micelles. Archives of Biochemistry and Biophysics, 408, 239–245. |
| [67] | Trombino, S., Serini, S., Di Nicuolo, F., Celleno, L., Ando, S., & Picci, N. (2004). Antioxidant effect of ferulic acid in isolated membranes and intact cells. Journal of Agriculture and Food Chemistry, 52, 2411-2420. |
| [68] | Liao, K. I., & Yin, M. Ch. (2000). Individual and combined antioxidant effects of seven phenolic agents in human. Journal of Agriculture and Food Chemistry, 48, 2266–2270. |
| [69] | 69.Gurbuz, I. (2003). “Antiulcerogenic activity of some plants used as folk remedy in Tur key,” Journal of Ethnopharmacology, vol.88, no. 1, pp.93–97, 2003. |
| [70] | Shui, G., & Peng L. L. (2004). An improved method for the analysis of major antioxidants of Hibiscus esculentus Linn. Journal of Chromatography A, 1048, pp. 17–24. |
| [71] | Atawodi, S. E., Atawodi, J. C., Idakwo, G. A., Pfundstein, B., Haubner, R., Wurtele, G., Spiegelhalder, & Owen, R. W. (2009). Polyphenol composition and antioxidant potential |
| [72] | Khomsug, P., Thongjaroenbuangam, W., Pakdeenarong, N., Suttajit, M., & Chantiratikul, P. (2010). Antioxidative Activities and Phenolic Content of Extracts from Okra (Abelmoschus esculentus L.) Research Journal of Biological Sciences, 5(4), 310-313. |
| [73] | 73 Adelakun, O. E., Ade-Omowaye, B. I. O., Adeyemi, I. A., & Van De Venter, M. (2010). Functional properties and mineral contents of a Nigerian okra seed (Abelmoschus esculentus Moench) fl our as influenced by pretreatment. Journal of Food Technology, 8(2), 39–45. |
| [74] | Ansari, N. M., Houlihan, L., Hussain, B., & Pieroni, A. (2005). Antioxidant activity of five vegetables traditionally consumed by south-Asian migrants in Bradford, Yorkshire, UK. Phytotherapy Research, 19(10), 907-911. |
| [75] | Liao, H, Liu, H., & Yuan, K. (2012). A new flavonol glycoside from the Abelmoschus esculentus Linn. Pharmagnosy Magazine, 8, 12-5. |
| [76] | Ngoc, T., Ngo, N., Van, T., & Phung, V. (2008). Hypolipidemic effect of extracts from Abelmoschus esculentus L. (Malvaceae) on Tyloxapol-induced hyperlipidemia in mice. Warasan Phesatchasat, 35, 42–46. |
| [77] | Messing, J., Thöle, C., Niehues, M., Shevtsova, A., Glocker, E., & Hensel, A. (2014). Antiadhesive properties of Abelmoschus esculentus (Okra) immature fruit extract against Helicobacter pylori adhesion. PLoS One, 9(1), e84836. |
| [78] | Georgiadisa, N., Ritzoulisa, C., Siouraa, G., Kornezoua, P., Vasiliadoub, C., & Tsioptsiasa, C. (2011). Contribution of okra extracts to the stability and rheology of oil-in-water emulsions. Food Hydrocolloids, 25(5), 991–999. |
| [79] | Bakre, L. G., & Jaiyeoba, K. T. (2009). Effects of drying methods on the physicochemical and compressional characteristics of Okra powder and the release properties of its metronidazole tablet formulation. Archives of Pharmacal Research, 32 (2), 259-67. |
| [80] | Zaharuddin, N.D., Noordin, M.I, & Kadivar, Ali. (2014). The Use of Hibiscus esculentus (Okra) Gum in Sustaining the Release of Propranolol Hydrochloride in a Solid Oral Dosage Form. BioMed Research International, Article ID 735891, 8 pages. |
| [81] | Lengsfeld, C., Titgemeyer, F., Faller, G., & Hensel, A. (2004). Glycosylated compounds from okra inhibit adhesion of Helicobacter pyroli to human gastric mucosa. J Agric Food Chem. 52:1495–503. |
| [82] | Sengkhamparn, N., Verhoef, R., Schols, HA., Sajjaanantakul, T., & Voragen, AG. (2009). Characterisation of cell wall polysaccharides from okra (Abelmoschus esculentus (L.) Moench) Carbohydr Res. 344:1824–32. |
| [83] | Tomoda, M., Shimizu. N., Gonda, R., Kanari, M., Yamada, H., & Hikino, H. (1989). Anticomplementary and hypoglycemic activity of okra and hibiscus mucilage. Carbohydr Res. 190:323–8. |
| [84] | Kahlon, TS., Chapman, MH., & Smith, GE. (2007). In vitro binding of bile acids by okra, beets, asparagus, eggplant, turnips, green beans, carrot and cauliflower. Food Chem. 103:676–80. |
| [85] | Sabitha, V., Ramachandran, S., Naveen, K. R., and Panneerselvam, K. (2011). Antidiabetic and antihyperlipidemic potential of Abelmoschus esculentus (L.) Moench. in streptozotocin-induced diabetic rats, J Pharm Bioallied Sci. 3(3): 397–402. |
