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Irradiation and Packaging Affect the Nitrate‐Nitrogen Concentrations of Potatoes
Author(s) -
MONDY NELL L.,
SEETHARAMAN KOUSHIK,
MUNSHI CYRUS B.
Publication year - 1992
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1992.tb06856.x
Subject(s) - nitrate , nitrogen , chemistry , pith , cultivar , irradiation , polyethylene , horticulture , gamma irradiation , biology , physics , organic chemistry , nuclear physics
Russet Burbank and Kennebec potato cultivars were irradiated with dosages of 0.1 and 1.0 KGy and stored in polyethylene or paper bags for 1 or 3 mo at 5°C or 20°C. Tubers receiving irradiation showed a significant (p<0.01) increase in nitrate‐nitrogen concentration as compared to controls. Those receiving the 1.0 KGy dose had the highest nitrate‐nitrogen concentration. Tubers stored in polyethylene bags were significantly (p<0.01) higher in nitrate‐nitrogen concentration than those stored in paper bags. Tubers stored at 20°C were significantly (p<0.01) higher in nitrate‐nitrogen than those stored at 5°C. These trends were consistent for both cultivars. The cortex region was significantly (p<0.01) higher in nitrate‐nitrogen concentration than the pith region. Kennebec tubers were significantly (p<0.01) higher in nitrate‐nitrogen than the Russet Burbank tubers for all irradiation doses and storage temperatures.