Elsevier

Nutrition Research

Volume 20, Issue 3, March 2000, Pages 349-358
Nutrition Research

Human study
Effect of cowpea (Vigna unguiculata) processing methods on flatus causing oligosaccharides

https://doi.org/10.1016/S0271-5317(00)00128-7Get rights and content

Abstract

Oligosaccharide contents of 5 cowpea varieties were studied in raw and processed samples. The average content of the oligosaccharides in whole raw cowpea were raffinose 1.19g/100g and stachyose 3.88g/100g with no varietal difference in the levels of raffinose. Stachyose levels showed difference due to variety. Dehulling resulted in a mean reduction of 30.25% for raffinose and 26.80% for stachyose while cold water soaking for 16hrs gave a mean reduction of 40.34% for raffinose and 35.29% for stachyose. Cooking for 40mins was sufficient to reduce the mean raffinose and stachyose contents to 47.06% and 36.85% respectively. Mean reduction of 47.90% for raffinose and 47.16% for stachyose were obtained when the cowpea was processed into bean cake. Cooking with potash reduced the mean raffinose level by 68.90% and 61.34% for stachyose. Hot water (80°C) soaking for 4 hrs brought about a mean decrease of over 80% for both raffinose and stachyose. Processing time and treatment (processing method) affected the levels of the oligosaccharides more than variety.

References (33)

  • Z Borejszo et al.

    Reduction of flatulence-causing sugars by high temperature extrusion of pinto bean high starch fractions

    J. Food Sci.

    (1992)
  • CGIAR. Cowpea (Vigna unguiculata) In: Priorities and strategies for resource allocation during 1998 - 2000. CGIAR...
  • CE Williams

    Evaluation of the nutritional potential of Akara made from cowpea meal and traditional paste as a source of improving nutrition in rural Nigeria

    Nig. J. Nutr. Sci.

    (1984)
  • JW Anderson et al.

    Serum lipid response of hypocholesterolemic men to single and divided doses of canned beans

    Am. J. Clin. Nutri.

    (1990)
  • H Trowell

    Dietary fibre, ischeamic heart disease and diabetes mellitus

  • DJA Jenkins et al.

    The relationship between glycemic response, digestibility and factors influencing the dietary habits of diabetics

    Am. J. Clin. Nutr.

    (1984)
  • MA Uebersax et al.

    Strategies and procedure for processing Dry beans

    Food Technol

    (1991)
  • J Cerning-Beroard et al.

    A comparism of the carbohydrate composition of legume seeds: Horsebeans, peas and lupines

    Cereal Chem

    (1976)
  • AO Onigbinde et al.

    Oligosaccharide content of 20 varieties of cowpeas in Nigeria

    J. Food Sci.

    (1983)
    AO Onigbinde et al.

    Oligosaccharide content of 20 varieties of cowpeas in Nigeria

    J. Food Sci.

    (1983)
  • J Tomlin et al.

    Investigation of normal flatus production in healthy volunteers

    Gut.

    (1991)
  • PO Ogun et al.

    Effect of processing on certain antinutrients in cowpeas (Vigna unguiculata)

    J. Food Sci.

    (1989)
  • IA Nnanna et al.

    Protein and starch digestibility and flatulence potential of germinated cowpea (Vigna unguiculata)

    J. Food Sci.

    (1990)
  • RI Somiari et al.

    Effect of soaking, cooking and crude alpha-galactosidase treatment on the oligosaccharide content of cowpea flours

    J. Sci. Food Agric.

    (1993)
  • D Thananunkul et al.

    Degradation of raffinose and stachyose in soybean milk by alpha-Galactosidase from Mortieralla vinacea

    Entrapment of alpha-galactosidase within polyacrylamide gel

    J. Food Sci.

    (1976)
  • NR Reddy et al.

    Changes in oligosaccharides during germination and cooking of black gram and fermentation of backgram/Rice blend

    Cereal Chem.

    (1980)
  • KC Chang et al.

    Effect of germination on oligosaccharides and nonstarch polysaccharides in navy and pinto beans

    J. Food Sci.

    (1989)
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