NDLI: Effect of processing methods on nutritional, sensory, and physicochemical characteristics of biofortified bean flour

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Effect of processing methods on nutritional, sensory, and physicochemical characteristics of biofortified bean flour

Content Provider	PubMed Central
Author	Grace, Nkundabombi Marie Dorothy, Nakimbugwe Muyonga, John H.
Abstract	Common beans (Phaseolus vulgaris L.) are rich nutritious and affordable by vulnerable groups, thus a good choice for biofortification to address malnutrition. However, increasing micronutrients content of beans, without improving micronutrients bioavailability will not improve the micronutrients status of consumers. Effect of different processing methods on the physicochemical characteristics of biofortified bean flour was determined. Processing methods used in this study were malting (48 h), roasting (170°C/45 min), and extrusion cooking using a twin screw extruder with three heating sections, the first set at 60°C, the second at 130°C, and the last one at 150°C. The screw was set at a speed of 35 Hz (123g) and bean flour moisture content was 15%. Mineral extractability, in vitro protein digestibility, pasting properties, and sensory acceptability of porridge and sauce from processed flour were determined. All processing methods significantly increased (P < 0.05) mineral extractability, iron from 38.9% to 79.5% for K131 and from 40.7% to 83.4% for ROBA1, in vitro protein digestibility from 58.2% to 82% for ROBA1 and from 56.2% to 79% for K131. Pasting viscosities of both bean varieties reduced with processing. There was no significant difference (P < 0.05) between sensory acceptability of porridge or sauce from extruded biofortified bean flour and malted/roasted biofortified bean flour. Acceptability was also not affected by the bean variety used. Mineral bioavailability and in vitro protein digestibility increased more for extruded flour than for malted/roasted flours. Sauce and porridge prepared from processed biofortified bean flour had lower viscosity (extruded flour had the lowest viscosity), thus higher nutrient and energy density than those prepared from unprocessed biofortified bean flour. Estimated nutritional contribution of sauce and porridge made from processed ROBA1 flour to daily requirement of children below 5 years and women of reproductive age found to be high. These results show that processing methods enhanced nutritional value of biofortified bean flour and that processed biofortified bean flour can be used to prepare nutrient and energy‐dense gruel to improve on nutritional status of children under 5 years and women of reproductive age.
Related Links	http://dx.doi.org/10.1002/fsn3.301
Ending Page	397
Page Count	14
Starting Page	384
File Format	PDF
ISSN	20487177
e-ISSN	20487177
Journal	Food Science & Nutrition
Issue Number	3
Volume Number	4
Language	English
Publisher	John Wiley and Sons Inc.
Publisher Date	2016-05-01
Access Restriction	Open
Rights Holder	John Wiley and Sons Inc.
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Food Science

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