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B-vitamins and heat processed fermented starchy and vegetable foods in sub-Saharan Africa: A review

Journal

JOURNAL OF FOOD SCIENCE
Volume 88, Issue 8, Pages 3155-3188

Publisher

WILEY
DOI: 10.1111/1750-3841.16697

Keywords

cereal and roots and tubers fermented foods; food processing; health benefits; indigenous vegetables; lactic acid fermentation

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Micronutrient deficiency still persists in sub-Saharan Africa (SSA) despite the availability of high nutritional potential in fermented foods and vegetables. Fermentation enhances food quality by improving taste, aroma, texture, and safety. However, heat treatment during processing can either improve or decrease the bioavailability of B-vitamins in fermented foods. This review focuses on fermented starchy foods and vegetables in SSA and explores techniques to prevent B-vitamin loss or enrich B-vitamins before consumption.
Micronutrient deficiency still occurs in sub-Saharan Africa (SSA) despite the availability of several food resources, particularly fermented foods and vegetables, with high nutritional potential. Fermentation enhances the quality of food in several aspects. Organoleptically, certain taste, aroma, and textures are developed. Health and safety are improved by inhibiting the growth of several foodborne pathogens and removing harmful toxic compounds. Furthermore, nutrition is enhanced by improving micronutrient contents and bioavailability from the food, especially vitamin B content. However, during processing and before final consumption, many fermented foods are heat treated (drying, pasteurization, cooking, etc.) to make the food digestible and safe for consumption. Heat treatment improves the bioavailability of B-vitamins in some foods. In other foods, heating decreases the nutritional value because some B-vitamins are degraded. In SSA, cooked starchy foods are often associated with vegetables in household meals. This paper reviews studies that have focused fermented starchy foods and vegetable foods in SSA with the potential to provide B-vitamins to consumers. The review also describes the process of the preparation of these foods for final consumption, and techniques that can prevent or lessen B-vitamin loss, or enrich B-vitamins prior to consumption.

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