EFFECT OF STORAGE ON THE CARBOHYDRATE CONTENT OF TWO VARIETIES OF POTATOES GROWN IN CANADA AND TREATED WITH GAMMA RADIATION<sup>a</sup>

Cloutier, J. A. R.; Cox, Constance E.; Manson, Jane M.; Clay, Marilyn G.; Johnson, Lindsey

doi:10.1111/j.1365-2621.1959.tb17318.x

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…Details of experimental design, gamma radiation treatments, and storage conditions werc described by Cloutier et al (3).…”

Section: Methodsmentioning

confidence: 99%

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THE EFFECT OF STORAGE ON ASCORBIC ACID CONTENT OF GAMMA RADIATED POTATOES ^a

Panalaks¹,

Pelletier²

1960

Journal of Food Science

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The effect of ionizing radiations on the vitamin C content of foods is known to depend upon the level of radiations. Nickerson et al. (7) showed that high-voltage cathode rays of 2000 krep (1860 krad) caused 6 9 2 % loss of this vitamin in asparagus, broccoG, green beans, and spinach. Proctor and O'Meara (8) also demonstrated that high-voltage cathode radiations caused some loss of ascorbic acid in solutions, and to a lesser extent, in orange juice. Brownell and associates (2) maintained that even radiations of 10 krep (9.3 krad) reduced the ascorbic acid content of potatoes, and that the effects were more pronounced as the dosage level increased, but no data were given.On the other hand, Mickaelsen and Roer (6) reported that the vitamin C content was decreased in both radiated and non-radiated potatoes during the first seven months of storage at approximately 40" F, but was restored after this period, and that ascorbic acid levels of the radiated samples were higher than those of the controls.In the light of the present divergent views regarding the effect of storage on the ascorbic acid content of potatoes which had been subjected to ionizing radiations to inhibit sprouting, there appeared to be a need for further study. Cloutier et al. (3) reported the effect of storage on the carbohydrate content of two varieties of potatoes treated with gamma radiation. This paper reports data on the ascorbic acid content of the same set of samples. MATERIAL AND METHOD Two varieties, Katahdin and Netted Gem (Russet Burbank) were used. Details of experimental design, gamma radiation treatments, and storage conditions werc described by Cloutier et al. (3).Tubers were cut in quarters lengthwise. Each sample was a quarter of the same tuber which was used in the determinations of carbohydrates. Five replicates were analyzed for each treatment and for each storage period of each variety of potatoes, except for those samples remaining after 9 months of storage. In this case because of the relatively low variation between replicates previously obtained, only two replicates of 2% quarters of potatoes were used.Samples were blended in 20% meta-phosphoric acid with cracked ice in a Waring blender, and the blends diluted with distilled water to contain 2% meta-phosphoric acid.

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“…Details of experimental design, gamma radiation treatments, and storage conditions werc described by Cloutier et al (3).…”

Section: Methodsmentioning

confidence: 99%

“…Cloutier et al (3) reported the effect of storage on the carbohydrate content of two varieties of potatoes treated with gamma radiation. This paper reports data on the ascorbic acid content of the same set of samples.…”

mentioning

confidence: 99%

THE EFFECT OF STORAGE ON ASCORBIC ACID CONTENT OF GAMMA RADIATED POTATOES ^a

Panalaks¹,

Pelletier²

1960

Journal of Food Science

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“…Le traitement aux rayons gamma (85 Gy) du cobalt 60 s'est révélé efficace (130). Ce traitement peut toutefois faire augmenter la teneur en sucres (28), mais de façon temporaire (32). Un procédé, jugé très efficace en Grande-Bretagne et ailleurs, consiste à utiliser de l'alcool nonylique (3,5,5-triméthyle-hexane-l-ol) en l'appliquant directement sur les pommes de terre entreposées par évaporation dans le système de ventilation, à raison de 1 mL/m 3 d'air avec un débit de 1,5 m 3 /min la tonne de pommes de terre (28).…”

Section: Pommes De Terre Tardivesunclassified

Entreposage commercial des fruits et des légumes

Lidster¹,

Canada²

1988

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présente publication parue en 1967 sous le n°1260. L'information avait alors été fournie par les chercheurs des universités et le personnel des ministères fédéral et provinciaux de l'Agriculture. La deuxième édition est parue en 1974 sous le n°1532 à la suite d'une révision en profondeur de la version originale, avec apport de données sur l'entreposage des fruits par S.W. Porritt. Cette troisième édition, préparée par les D rs P.D. Lidster, P.D. Hildebrand et L.S. Bérard, présente les dernières découvertes concernant l'entreposage des fruits et légumes et de l'information plus détaillée sur l'atmosphère contrôlée. Des recommandations supplémentaires ont été ajoutées pour l'entreposage du bleuet et de certains légumes dont la carotte et le chou. Les auteurs recommandent des traitements chimiques pour améliorer les conditions d'entreposage de certains fruits et légumes. Avant d'en faire usage, il est important de connaître les dispositions de la loi qui limite leur application à des produits horticoles particuliers. Ces règlements, destinés à protéger la santé et le bien-être des consommateurs, concernent surtout la quantité de résidus chimiques retrouvés sur ou dans les fruits ou les légumes à la suite d'application. Au Canada, avant d'appliquer des pesticides, il faut consulter la Direction des aliments et drogues de Santé et Bien-être Canada à Ottawa ou l'un de ses inspecteurs ou directeurs en région. VI

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