Half-embryo test for identification of gamma-irradiated grapefruit

Journal Article · · Journal of Food Science; (United States)

DOI:https://doi.org/10.1111/j.1365-2621.1989.tb03086.x· OSTI ID:5808304

Kawamura, Yoko; Uchiyama, Sadao; Saito, Yukio ^[1]

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1. National Inst. of Hygienic Sciences, Tokyo (Japan)

Whole grapefruit were exposed to 5, 15, 30, 50, and 100 krad doses of gamma-radiation. Seeds were removed and half-embryos, consisting of one cotyledon and embryo axis, dissected from the surrounding tissue. Nonirradiated half-embryos germinated faster than intact or partially dissected (outer seed coat removed) seeds. Shoot elongation was also quicker, occurring within 6 days. Irradiated half-embryos over 15 krad doses showed markedly reduced root growth and shoot elongation was almost totally retarded. Differences between irradiated and nonirradiated half-embryo were not affected when variety, harvest date, and fruit storage conditions were varied. This test could thus discriminate between irradiated and non irradiated grapefruit.

• OSTI ID: 5808304
• Journal Information: Journal of Food Science; (United States), Vol. 54:2; ISSN 0022-1147
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
GRAPEFRUITS
RADICIDATION
GAMMA RADIATION
GERMINATION
PLANT GROWTH
QUALITY ASSURANCE
ROOTS
SEEDS
ELECTROMAGNETIC RADIATION
FOOD
FRUITS
GROWTH
IONIZING RADIATIONS
IRRADIATION
PASTEURIZATION
RADIATIONS
553004* - Agriculture & Food Technology- Food Protection & Preservation- (1987-)