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Manual of laboratory procedures for quality evaluation of sorghum and pearl millet

OAR@ICRISAT

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Relation http://oar.icrisat.org/1050/
 
Title Manual of laboratory procedures for quality evaluation of sorghum and pearl millet
 
Creator Gomez, M I
Obilana, A B
Martin, D F
Madzvamuse, M
Monyo, E S
 
Subject Millets
Sorghum
 
Description This manual is for use by scientists and technicians who screen and evaluate varieties of
sorghum and pearl millet for their grain quality. It is based on experience in agronomy and
food technology acquired over several years in SADC/ICRISAT's Sorghum and Millet
Improvement Program in Zimbabwe, where there is a focus on generalized screening
methods for broad grain qualities rather than detailed component analysis of a molecular
nature.
Laboratory procedures, including qualitative and quantitative methods, were compiled
f rom existing sources and modified in several ways for the Program's use. Quality
parameters were focused on grain, on primary products such as flour, meal, and malt, and
on such secondary products as baked flour, steamed flour, and porridge. The grain and
these products were evaluated using physical and chemical methods, and a database was
created to serve as an empirical reference document derived f rom field and laboratory
results.
The manual's first section, on grain-quality evaluation, describes rapid techniques for
routine screening. The qualitative parameters used are: color, pericarp thickness, testa,
endosperm texture, and hardness. Quantitative parameters comprise 100-kernel weight ,
Agt ron readings, and moisture, floaters, dehulling loss, milling yield, size fractions, and
water absorption expressed as percentages. Eight chemical methods of evaluation are
described in the second section, among which only rapid tannin analysis forms part of
routine screening tests. The last section covers product preparation and testing, wi th
specific reference to bread, cookies, and porridge. And the manual ends wi th its unique
empirical database of 39 tables which presents grain-quality and malting test results for
selected lines, varieties, and hybrids of sorghum and pearl millet.
 
Publisher International Crops Research Institute for the Semi-Arid Tropics
 
Date 1997
 
Type Monograph
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/1050/1/RA_000319.pdf
Gomez, M I and Obilana, A B and Martin, D F and Madzvamuse, M and Monyo, E S (1997) Manual of laboratory procedures for quality evaluation of sorghum and pearl millet. Manual. International Crops Research Institute for the Semi-Arid Tropics.