Document Detail


Available lysine and digestible amino acid contents of proteinaceous foods of India.
MedLine Citation:
PMID:  23107549     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Cereals and legumes are staple foods in India and are limiting in lysine and sulphur amino acids, respectively. Available lysine loss, due to Maillard-type reactions that may occur during food preparation, exacerbates the problem of lysine deficiency particularly in cereals. Consequently, determining the contents of digestible essential amino acids, particularly lysine, is important. True ileal digestibilities of most amino acids (including total and reactive lysine) were determined for ten food ingredients and eleven foods commonly consumed in India. Semi-synthetic diets each containing either an ingredient or the prepared food as the sole protein source were formulated to contain 100 g kg- 1 protein (75 g kg- 1 for rice-based diets) and fed to growing rats. Titanium dioxide was included as an indigestible marker. Digesta were collected and the amino acid content (including reactive lysine) of diets and ileal digesta determined. Available (digestible reactive) lysine content ranged from 1·9-15·4 g kg- 1 and 1·8-12·7 g kg- 1 across the ingredients and prepared foods respectively. True ileal amino acid digestibility varied widely both across ingredients and prepared foods for each amino acid (on average 60-92 %) and across amino acids within each ingredient and prepared food (overall digestibility 31-96 %). Amino acid digestibility was low for many of the ingredients and prepared foods and consequently digestibility must be considered when assessing the protein quality of poorer quality foods. Given commonly encountered daily energy intakes for members of the Indian population, it is estimated that lysine is limiting for adults in many Indian diets.
Authors:
Shane M Rutherfurd; Kiran Bains; Paul J Moughan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The British journal of nutrition     Volume:  108 Suppl 2     ISSN:  1475-2662     ISO Abbreviation:  Br. J. Nutr.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372547     Medline TA:  Br J Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  S59-68     Citation Subset:  IM    
Affiliation:
Riddet Institute, Massey University, Palmerston North, New Zealand.
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