บทคัดย่องานวิจัย

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Processing quality of low and high sugar potato cultivars as influenced by storage temperatures.

Marwaha, R. S.;

Journal of the Indian Potato Association Year: 2000 Vol: 27 Issue: 1/2 Pages: 5-11 Ref: 21 ref.

2000

บทคัดย่อ

Processing quality of low and high sugar potato cultivars as influenced by storage temperatures.

Potato tubers of 5 exotic (Atlantic, Frito lay (FL) 1291, FL 1533, FL 1584 and FL 1625) and 3 Indian cultivars (Kufri Chandramukhi, Kufri Jyoti and Kufri Lauvkar) grown during October 1994 to January 1995 were stored under refrigerated (3-4 deg C, 90-95% RH) and farm storage (16-38 deg C, 30-74% RH) conditions for 28 and 75 days, respectively. Before storage, fried chips of the exotic cultivars were of lighter colour than those of the Indian cultivars. The dry matter content of exotic cultivars (20.2-23.2%) was higher than Indian cultivars (18-20.5%) during storage. Atlantic, FL 1291, FL 1533, FL 1584 and FL 1625 had low mean free amino acid (69.1, 72.2, 69.1, 69.1 and 67.7 mg N/100 g fresh weight (FW), respectively) and total phenol (35.2, 31.3, 35.8, 31.9 and 31.5 mg/100 g FW, respectively) contents during refrigerated storage. However, chip colour score, and reducing sugar, sucrose and free amino acid contents increased in all cultivars after 28 days of refrigerated storage. All the Indian cu

ltivars and FL 1291 were unfit for chipping after 2 weeks of storage, while FL 1625 produced nearly acceptable chips after 28 days of storage. Kufri Lauvkar and all the exotic cultivars produced light coloured (acceptable) chips until 75 days of farm storage. The average content of reducing sugars, free amino acids and total phenols decreased by approx equal to 50, 8 and 25%, respectively, while sucrose content increased by 13% after 75 days of farm storage.