บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of short anoxia exposure on metabolic changes of persimmon fruits (Diospyros kaki L.).

Zavrtanik, M.; Hribar, J.; Vidrih, R.;

Acta Horticulturae Year: 1999 Issue: No. 485 Pages: 405-411 Ref: 12 ref.

1999

บทคัดย่อ

Effect of short anoxia exposure on metabolic changes of persimmon fruits (Diospyros kaki L.).

Persimmon fruits (cultivars Fuji and Hachiya) harvested on 21 October 1996 were stored at 10 deg C for 4 days and then held in 99.9% CO2 or 99.9% N2 at 20 deg C for 24 h followed by a return to normal (air) conditions at 1 deg C. Untreated (control) samples were kept at 20 deg C for 24 h and then stored at 1 deg C. Acetaldehyde content increased during storage in all fruits, but particularly in fruits from the CO2 treatment. After 2 days, fruits treated with N2 had accumulated greater amounts of ethanol than fruits treated with CO2. Anaerobic conditions promoted astringency removal. Faster astringency removal was observed in CO2-treated fruits than in N2-treated fruits, but CO2 treatment caused internal browning. The ratio between polymeric (water-insoluble) and oligomeric (soluble) polyphenols correlated with the degree of astringency. Total phenols and the ratio between oligo- and polymeric tannin molecules decreased after treatment.