Process for protein enrichment of cassava by solid substrate fermentation in rural conditions

Journal Article · Mon Jun 01 00:00:00 EDT 1987 · Biotechnol. Bioeng.; (United States)

DOI:https://doi.org/10.1002/bit.260290807· OSTI ID:5779652

Daubresse, P; Ntibashirwa, S; Gheysen, A; Meyer, J A

An artisanal static process for protein enrichment of cassava by solid-state fermentation, developed in laboratory and tested on pilot units in Burundi (Central Africa), provides enriched cassava containing 10.7% of dry matter protein versus 1% before fermentation. Cassava chips, processed into granules of 2-4-mm diameter, are moistened (40% water content) and steamed. After cooling to 40 degrees C, cassava is mixed with a nutritive solution containing the inoculum (Rhizopus oryzae, strain MUCL 28627) and providing the following per 100 g dry matter: 3.4 g urea, 1.5 g KH/sub 2/PO/sub 4/, O.8 g MgSO/sub 4/.7H/sub 2/O, and 22.7 g citric acid. For the fermentation, cassava, with circa 60% moisture content, is spread in a thin layer (2-3 cm thick) on perforated trays and slid into an aerated humidified enclosure. The incubation lasts more or less 65 hours. The production of protein enriched cassava is 3.26 kg dry matter/square m tray. The effects of the variation of the nutritive solution composition and the inoculum conservation period on the protein production are equally discussed. (Refs. 37).

• Research Organization: Burundi Agricultural Sciences Institute, BP 795, Bujumbura, Burundi; Lab. Plant Pathology, B- 1348 Louvain-la-Neuve, Belgium
• OSTI ID: 5779652
• Journal Information: Biotechnol. Bioeng.; (United States), Vol. 29
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
09 BIOMASS FUELS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
CASSAVA
FERMENTATION
RHIZOPUS
AERATION
BURUNDI
COOLING
ENRICHMENT
FOOD PROCESSING
HUMIDITY
INCUBATION
LABORATORIES
MIXING
MOISTURE
NUTRIENTS
NUTRITION
ORGANOLEPTIC PROPERTIES
PILOT PLANTS
PROTEINS
RURAL AREAS
SIZE
SOLIDS
SOLUTIONS
STEAM
SUBSTRATES
TESTING
TIME DEPENDENCE
WHOLESOMENESS
YIELDS
AFRICA
BIOCONVERSION
DEVELOPING COUNTRIES
DISPERSIONS
FUNCTIONAL MODELS
FUNGI
MIXTURES
ORGANIC COMPOUNDS
PLANTS
PROCESSING
553000* - Agriculture & Food Technology
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
552000 - Public Health