Abstract
Cereal Chem. 66(3):171-172 Wheat, maize, chickpea, and mung bean seeds were irradiated at 0.5, 1.0, amino acids were radiation labile, particularly in the legumes. Significant 2.5, and 5.0 kGy in a cobalt-60 gamma cell. Nonirradiated seeds served as losses in all cultivars also were noted for lysine, tyrosine, and isoleucine. controls. Comparison of amino acid profiles showed that sulfur-containing However, the percent available lysine was higher in the irradiated seeds. Accumulating evidence indicates that there is some loss of nutritive value when gamma irradiation is used as a means of food preservation (Badshah and Klopfenstein 1988), just as there are losses with the much more widely used freezing, canning, or drying methods of spoilage prevention. However, losses from conventional preservation methods are well-documented (IFT 1986), whereas nutritional loss caused by irradiation has been much less studied. Our goal in the experiment described here was to determine the effects of gamma irradiation at levels known to effectively destroy insect infestations on the protein nutritional quality (amino acid profiles and available lysine) of wheat, maize, mung bean, and chickpea. The principal changes that have been shown to occur in proteincomponent amino acids are deamination, decarboxylation, and oxidation of sulfhydryl and aromatic groups (Urbain 1986, Delincee 1983). However, at the radiation doses commonly employed for food irradiation (up to 10 kGy), reported changes in protein nutritive value and amino acid profiles have been small (Delincee 1983).
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Claims 3
Claim · model-written summary
Irradiation caused losses of lysine, tyrosine and isoleucine in all cultivars.
- Taxon
- Wheat, maize, chickpea, and mung bean
Cicer arietinum
Triticum aestivum
Zea mays.jpg?width=60)
Vigna radiatae0 - Treatment
- irradiatede0
- Outcome
- lysine, tyrosine, and isoleucinee1
- Direction
- lossese1
- Comparator
- Nonirradiated seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Wheat, maize, chickpea, and mung bean seeds were irradiated”
e1“losses in all cultivars also were noted for lysine, tyrosine, and isoleucine.”
e2“Nonirradiated seeds served as”
Claim · model-written summary
Available lysine percentage was higher in irradiated seeds.
- Taxon
- Wheat, maize, chickpea, and mung beanCicer arietinumTriticum aestivumZea maysVigna radiatae0
- Treatment
- irradiatede0
- Outcome
- percent available lysinee1
- Direction
- highere1
- Comparator
- Nonirradiated seedse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat, maize, chickpea, and mung bean seeds were irradiated”
e1“the percent available lysine was higher in the irradiated seeds”
e2“Nonirradiated seeds served as”
Claim · model-written summary
Sulfur-containing amino acids were radiation labile, particularly in legumes.
- Taxon
- Wheat, maize, chickpea, and mung beanCicer arietinumTriticum aestivumZea maysVigna radiatae0
- Treatment
- irradiatede0
- Outcome
- amino acidse1
- Direction
- radiation labilee1
- Qualifier
- particularly in the legumese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat, maize, chickpea, and mung bean seeds were irradiated”
e1“amino acids were radiation labile, particularly in the legumes”
e2“Comparison of amino acid profiles showed that sulfur-containing”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.