Effect of storage time on the quality of peach fruit held in cold storage in different types of packaging.
El-Shiekh, A. F.; Habiba, R. A.;
Gartenbauwissenschaft Year: 1996 Vol: 61 Issue: 1 Pages: 7-10 Ref: 22 ref.
1996
บทคัดย่อ
Different packaging procedures were tested for their ability to maintain postharvest quality and to extend the shelf life of peaches (cv. Early Grand [Earligrande]). Fruits were stored in open aluminium trays, unperforated paper bags, perforated paper bags or perforated polyethylene bags at 2 deg C and 85-95% RH. No significant weight loss, volume change or increase in titratable acidity was found after 30 days of storage in perforated polyethylene bags. Titratable acidity of stored peaches with other packaging increased and pH decreased over time. TSS content showed the greatest increase in fruits stored in trays and perforated paper bags and the smallest increase in those stored in perforated polyethylene bags. Total sugars and total phenolics increased significantly after 30 days of storage. In 1992 and 1993, polyphenol oxidase (PPO) [catechol oxidase] activity was high at harvest, decreased during the first 30 days of storage, then started to increase in unpacked fruits and those packed in p
erforated or unperforated paper. In fruits stored in polyethylene bags, PPO activity during storage decreased in 1992 but increased in 1993.