Article abstract

International Journal of Biotechnology and Food Science

Research Article | Published May 2017 | Volume 5, Issue 1, pp. 10-17

 

Anti-nutrient Content, and in vitro Protein Digestibility (IVPD) of Infant Food Produced from African Yam Bean (Sphenostylis sternnocarpa), and Bambara Groundnuts (Voandezela subterranean)

 

 

 

 

 

 Ekwere M. R.1

 Igile G. O.1*

 Ukoha H. A.2

 Mbakwe I. E.1

 Anegu B. C.2

 

  Email Author

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    1.    Department of Biochemistry, College of Medical Sciences, University of Calabar, P.M.B 1115, Calabar, Nigeria.

 

   2.    Departent of Biochemistry, School of Sciences, Federal University of Technology, Owerri, Nigeria.

 

 

 

 

 

 

 

 

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Citation: Ekwere MR, Igile GO, Ukoha HA, Mbakwe IE, Anegu BC (2017). Anti-nutrient Content, and in vitro Protein Digestibility (IVPD) of Infant Food Produced from African Yam Bean (Sphenostylis sternnocarpa), and Bambara Groundnuts (Voandezela subterranean). Int. J. Biotechnol. Food Sci. 5(1): 10-17.

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 Abstract 


African yam bean (AYB) (Sphenostylis stenocarpa) and bambara groundnut (BG) (Voadzeia subterranean) are some of the pulses with unutilized high nutritional value. The aim of this study was to assess the anti-nutrient content of raw and processed AYB and BG, and infant weaning diets formulated from flour processed from both crops, using a Nestle Infant formula (Nutrend) as standard. Reduction of anti-nutrient content was carried out using soaking and germination procedures, followed by oven drying at 105oC. After germination there was 92.13% tannin, 82.01% phytate, 60.14% cyanate and 80.36% oxalate reductions in AYB. There was 84.34% tannin, 82.34% phytate, 50.04% cyanate and 82.14% oxalate decreases in BG. Anti-nutrient contents of diets ranged from 14.31±0.75 - 15.20± 0.61 mg/g for tannin, 17.02±0.81 - 24.82±1.65 mg/g for phytate, 1.34±0.01 - 1.43±0.01 mg/g for cyanate and 0.14±0.02 - 0.55±0.05 mg/g for oxalate. These values compared well with those of the standard formula which gave 15.20±0.52 mg/g, 26.01±1.64 mg/g, 1.56±0.03 mg/g and 0.82±0.05 mg/g anti-nutrient contents of tannin, phytate, cyanate and oxalate. There was a significant (p<0.05) increase in digestibility values of diet 1 (87.60%), diet 2 (85.65%), and diet 3 (84.35%), while the standard diet 4 gave 85.31% digestibility value. Protein concentration (Pe%) of diets were 25.97%, 24.27% and 22.96%, for diets 1, 2 and 3, compared to 18.03% obtained for standard diet 4. The PE% profile and low anti-nutritional contents in test diets suggest that the diet formulas may serve as alternative infant weaning formulations. Thus, AYB and BG may serve as alternative infant weaning food and bridge in food security gap for weaning formulas.

Keywords  African yam bean   Bambara groundnuts   anti-nutrients   Protein digestibility




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