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Micronutrient composition and microbial community analysis across diverse landraces of the Ethiopian orphan crop enset

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posted on 2020-10-21, 11:33 authored by S Tamrat, JS Borrell, MK Biswas, D Gashu, T Wondimu, CA Vásquez-Londoño, PJS Heslop-Harrison, S Demissew, P Wilkin, MJR Howes
Enset (Ensete ventricosum) is a major starch staple and food security crop for 20 million people. Despite substantial diversity in morphology, genetics, agronomy and utilization across its range, nutritional characteristics have only been reported in relatively few landraces. Here, we survey nutritional composition in 22 landraces from three enset growing regions. We present mineral characterization of enset corm tissue, free amino acid characterization of raw and processed (fermented) tissues and genomic analysis of the microbial community associated with fermentation. We show that compared to regionally important tubers and cereals, enset is high in calcium, iron, potassium and zinc and low in sodium. We report changes in free amino acid composition due to processing, and establish that the bacteria genera Acetobacter, Lactobacillus and Bifidobacterium, predominate during fermentation. Nutritional and microbial variation presents opportunities to select for improved composition, quality and safety with potentially significant impacts in food security and public health.

History

Citation

Food Research International Volume 137, November 2020, 109636

Author affiliation

Department of Genetics and Genome Biology

Version

  • AM (Accepted Manuscript)

Published in

Food Research International

Volume

137

Pagination

109636 - 109636

Publisher

Elsevier BV

issn

0963-9969

eissn

1873-7145

Acceptance date

2020-08-21

Copyright date

2020

Available date

2020-08-25

Language

en

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