Effects of Peracetic Acid(PAA) Combined with Calcium Treatments on Storage Quality of Loquat Fruit

[Objective] The paper was to evaluate effects of peracetic acid （PAA） combined with calcium treatments on storage quality of Ioquat fruits, so as to pro- vide practical techniques to solve the problems of postharvest rot and quality deteri- oration for Ioquat fruits. [Method] With Ioquat fruits of Qingzhong variety as materi- als, 0.2%, 0.4% and 0.8% PAA combined with 0.8% CaCI2 was used to soak Ioquat fruits for 4 min, 0.8% CaCl2 and water treatments were set as two controls; the fruits were dried and packaged by 0.02 mm PE bags, then stored under non-chilling low temperature of （7±1） ℃. The indicators related to storage quality of Ioquat fruits were randomly tested once every 3 d, and their variation situations were analyzed. [Result] Compared with two control treatments and 0.2% PAA, 0.8% PAA combined with calcium treatments, the treatment of 0.4% PAA combined with 0.8% CaCl2 could significantly inhibit rot index, weight loss rate, firmness and cell membrane permeability of Ioquat fruits during storage period, which could also effectively delay the reduction of titratable acid, vitamin C, soluble solid content and juice yield, and maintain respiration intensity of fruits at a low level; the appearance and flavor qual- ity of fruits were good after stored for 25 d. [Conclusion] 0.4% PAA combined with 0.8% CaCl2 treatment is an efficient, safe and economical practice technology in an- ti-corrosion and quality preservation for postharvest Ioquat fruits .

博物馆藏品的处理和国际博协《博物馆职业道德准则》

藏品处理是指博物馆将某件文物从藏品中永久去除。藏品处理这一博物馆的基本工作看上去是和永久保藏文物的博物馆的性质相矛盾的。很多事例说明藏品处理对博物馆的工作是有利的。对于文物在什么情况下应该处理．处理应该履行什么手续．人们将继续讨论下去。

Effects of Fungicide Treatments and Storage Temperatures on Fruit Quality of Two Mango （Mangifera indica） Cultivars

Harvested fruits of mango （Mangifera indica） suffer from both physiological and pathological deterioration in quality during storage which consequently affects their market value. A study was conducted to investigate the effects of fungicide treatments and storage temperatures on fruit quality of two mango cultivars, Keirt and Palmer. Mango fruits were treated with 0.04% or 0.08% v/v Triadimefon at either 53 ℃ （hot） or at room temperature and then either stored under ambient conditions （27-29 ℃） or in a refrigerator at a temperature of 11-12 ℃. Fruits stored under ambient conditions developed external colour faster than those stored at a lower temperature. Brix values for fruits treated with Triadimefon decreased with time. Fruits stored at lower temperatures gave least Brix values as compared with those stored under ambient conditions. Percentage titratable acid （%TA） of fruits stored at low temperatures increased over time. Fruits stored at lower temperatures recorded lower pH compared with fruits stored under ambient conditions. Palmer fruits recorded higher %Brix to %TA ratio, indicating a higher sweetness level. The firmness of Palmer fruits kept at lower temperatures increased with time when compared with Keitt fruit. Fruits treated with hot water at 53 ℃ and/or stored at low temperatures （11-12 ℃） had lower levels of anthracnose infection than other treatments. Keitt fruits were more susceptible to anthracnose infection than Palmer fruits. Mango fruits should therefore be treated with hot water at 53 ℃ and then stored at low temperatures （11-12 ℃） in order to slow down the rate of ripening and to reduce anthracnose infection.

《国际博协通讯》2003年第一期编者的话

博物馆领域对于博物馆藏品的处理问题已经争论了很多年。面对藏品处理政策的新挑战，博物馆联盟、研究机构以及与文物遗产有关联的其它组织已经发展建立了藏品处理的原则和程序的指导方针。很多指导方针提倡处理后文物应当继续保存于公共领域，因为它是国家和人文遗产的有机构成。由于各个国家情况不同，争论的重点也不同，取决于博物馆的类型。在此期《国际博物馆协会通讯》，我们讨论主要争论点和建议。