บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Influence of pre-treatments on metabolism and wounding response of fresh cut potatoes evaluated with isothermal calorimetry.

Rocculi P., Gomez F., Wadso L., Romani S., Gekas V., Dalla Rosa M., Sjoholm I.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. page 25

2004

บทคัดย่อ

Influence of pre-treatments on metabolism and wounding response of fresh cut potatoes evaluated with isothermal calorimetry. The anti-browning effects of acidificant and antioxidant substances in potatoes have been broadly studied in the literature.However, to our knowledge there is no information about their effects o­n the metabolism of wounded tissue.We here have studied the influence of anti-browning substances o­n the metabolism of fresh-cut potatoes.

Samples with different surface to volume ratios were prepared from potatoes and treated with solutions of citric and ascorbic acid.The metabolic heat production was measured in closed glass ampoules in a TAM Air isothermal calorimeter for 24 hours at 20 °C and the fraction corresponding to the wounding response was evaluated.Interestingly, it is shown that ascorbic acid pretreatment accelerates the metabolism of the wounded tissue, the shift from aerobic to anaerobic metabolism of the samples in the ampoules occurred 4 to 5 hours before the control samples or the o­nes treated with citric acid.

The effect of different concentrations of both acids was investigated to evaluate this finding.