บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Postharvest conditioning temperatures and fruit maturity on flavedo soluble sugars of coastal and desert lemons.

Aung, L. H.; Jenner, J. F.; Fouse, D. C.; Houck, L. G.;

Journal of Horticultural Science and Biotechnology Year: 1999 Vol: 74 Issue: 3 Pages: 288-292 Ref: 7 ref.

1999

บทคัดย่อ

Postharvest conditioning temperatures and fruit maturity on flavedo soluble sugars of coastal and desert lemons.

The content and changes in flavedo soluble sugars in lemons of different maturity from coastal (California) and desert (Arizona) climatic regions to postharvest conditioning temperatures of 15 deg C and 10 deg C were determined. Conditioning caused significant changes in flavedo soluble sugars in lemons from both areas. Raffinose content increased with duration of conditioning in both desert and coastal lemons and was slightly higher after conditioning at 10 deg C than at 15 deg C. The flavedo sucrose content of green coastal lemons was greater than that of silver or yellow lemons and increased significantly in silver and yellow lemons after conditioning for 3 days at 15 deg C or 10 deg C, but declined significantly in all maturity classes to a low level with conditioning for more than 3 days. In contrast, the flavedo sucrose content of green and yellow desert lemons was 2.8-fold and 1.7-fold greater, respectively, than comparable coastal lemon flavedo, with the green lemon flavedo showing a sig

nificant gradual decrease with increasing duration of conditioning at 15 deg C and 10 deg C, but not in yellow lemon flavedo. The flavedo glucose and fructose contents of desert lemons remained relatively unchanged with conditioning at 15 deg C and 10 deg C, but their contents in yellow, silver and green coastal lemon flavedo increased after prolonged conditioning. The flavedo fructose content of yellow coastal lemons was significantly greater than that in green lemons, but there was no difference in flavedo fructose content of green and yellow desert lemons. The observed alteration of flavedo soluble sugars associated with conditioning provided an insight into cellular response to temperature, and emphasized the importance of climatic origin in lemon flavedo sugar composition.