N.C. Ihediohanma
Department of Food Science and Technology, Federal University of Technology, Owerri, Imo State, Nigeria
N.C. Onuegbu
Department of Food Science and Technology, Federal University of Technology, Owerri, Imo State, Nigeria
A.I. Peter-Ikechukwu
Department of Food Science and Technology, Federal University of Technology, Owerri, Imo State, Nigeria
N.C. Ojimba
Department of Food Science and Technology, Federal University of Technology, Owerri, Imo State, Nigeria
ABSTRACT
The Glycemic Indices (GI) of three yam cultivars commonly consumed in Nigeria were studied. The yam cultivars were white yam (Dioscorea rotundata Poir), water yam (Dioscorea alata) and three-leaved yam (Dioscorea domentroum). Five normal (healthy) volunteers participated in the study. GI was determined using a standard method with glucose as the reference food. Fifty (50) gram available carbohydrate portions of the yam cultivars were analyzed for proximate composition and dietary fiber by enzymatic-gravimetric method. The mean IAUCs (glycemic responses) for the test foods and glucose ranged from 863.5-3642.84 and were significantly different. Expectedly, glucose had the highest glycemic response of 3642.84. The mean IAUC for white yam, water yam and three-leaved yam were 2386.50, 863.50 and 1929.08 respectively. The GI of white yam (67) and three-leaved yam (56) were significantly higher than that of water yam (24). It was concluded that white yam and three-leaved yam are intermediate or medium glycemic food, whereas water yam is a low GI food.
PDF References Citation
How to cite this article
N.C. Ihediohanma, N.C. Onuegbu, A.I. Peter-Ikechukwu and N.C. Ojimba, 2012. A Comparative Study and Determination of Glycemic Indices of Three Yam Cultivars (Dioscorea rotundata, Dioscorea alata and Dioscorea domentorum). Pakistan Journal of Nutrition, 11: 547-552.
DOI: 10.3923/pjn.2012.547.552
URL: https://scialert.net/abstract/?doi=pjn.2012.547.552
DOI: 10.3923/pjn.2012.547.552
URL: https://scialert.net/abstract/?doi=pjn.2012.547.552
REFERENCES
- Anderson, N.E. and F.M. Clydesdale, 1980. Effects of processing on the dietary fiber content of wheat bran, pureed green beans and carrots. J. Food Sci., 45: 1533-1537.
CrossRef - AOAC., 1995. Official Methods of Analysis. 16th Edn., Association of Official Analytical Chemists, Washington, DC., USA.
Direct Link - Byrnes, S.E., J.C.B. Miller and G.S. Denver, 1995. Amylopectin starch promotes the development of insulin resistance in rats. J. Nutr., 125: 1430-1437.
Direct Link - Ford, E.S. and S. Liu, 2001. Glycemic index and serum high-density lipoprotein cholesterol concentration among us adults. Arch. Inter. Med., 161: 572-576.
CrossRefPubMedDirect Link - Frost, G., A. Leeds, G. Trew, R. Margara and A. Dornhorst, 1998. Insulin sensitivity in women at risk of coronary heart disease and the effect of a low glycemic diet. Metabolism, 47: 1245-1251.
CrossRef - Jenkins, D.J., T.M. Wolever, R.H. Taylor, H. Barker and H. Fielden et al., 1981. Glycemic index of foods: A physiological basis for carbohydrate exchange. Am. J. Clin. Nutr., 24: 362-364.
Direct Link - Salmeron, J., A. Ascherio, E.B. Rimm, G.A. Colditz and D. Spiegelman et al., 1997. Dietary fiber, glycemic load and risk of NIDDM in men. Diabetes Care, 20: 545-550.
CrossRefDirect Link - Soh, N.L. and J. Brand-Miller, 1999. The glycemic index of potatoes: The effect of variety, cooking method and maturity. Eur. J. Clin. Nutr., 53: 249-254.
PubMedDirect Link - Thomas, D.E., J.R. Brotherhood and J.C. Brand, 1991. Carbohydrate feeding before exercise: Effect of glycemic index. Int. J. Sports Med., 12: 180-186.
PubMedDirect Link - Trowell, H.C., 1973. Dietary fibre, ischaemic heart disease and diabetes mellitus. Proc. Nutr. Soc., 32: 151-157.
CrossRefDirect Link - Wolever, T.M., H.H. Vorster, I. Bjorck, J. Brand-Miller and F. Brighenti et al., 2003. Determination of the glycaemic index of foods: Interlaboratory study. Eur. J. Clin. Nutr., 57: 475-482.
Direct Link - Brand-Miller, J.C., S. Hayne, P. Petocz and S. Colagiuri, 2003. Low-glycemic index diets in the management of diabetes: A meta-analysis of randomized controlled trials. Diabetes Care, 26: 2261-2267.
CrossRefPubMedDirect Link
Akinyele Kelechi Reply
It is educative.
EBUNOLUWA IBIBO Ph.D Reply
A ROBUST PAPER IT IS. MAY I PLEASE, REQUEST THE AUDIENCE OF PROF. N.C IHEDIOHANMA, IF HE COULD REACH ME ON MY GMAIL PLEASE.