(ISO International Standard 6662 Plums - Guide to cold storage Prunes-GuidepourI'entreposagerefrigere First edition - 1983-02-15 UDC 634.22 : 664.8.037 ）6662-1983 (E) Ref.No.1SO6662-1983(E) Descriptors : agricultural products, fruits, plums, storage, general conditions. Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies). The work of developing International Standards is carried out through ISo technical committees. Every member body interested in a subject for which a technical committee has been authorized has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by theIso Council. International Standard ISO 6662 was developed by Technical Committee ISO/TC 34, Agricultural food products, and was circulated to the member bodies in May 1981. It has been approved by the member bodies of the following countries : Brazil Korea, Rep. of South Africa, Rep. of Czechoslovakia Mexico Spain Egypt, Arab Rep. of Netherlands Tanzania Ethiopia New Zealand Turkey Hungary Peru USA India Philippines USSR Iran Poland Yugoslavia Israel Portugal Kenya Romania The member body of the following country expressed disapproval of the document on technical grounds : France International Organization for Standardization, 1983 Printed inSwitzerland CoDvriaht Intern Standardizatior ISO 6662-1983(E) INTERNATIONAL STANDARD Plums Guide to cold storage Scope and field of application The fruits should be picked carefully and should be complete with their stalk and bloom wax. The presence of stalks is not This International Standard describes a method for the cold obligatory for fruits intended for processing. storage of certain varieties (cultivars) of plums obtained from Prunus domestica Linnaeus, Prunus insititia Linnaeus and 3.3 Puttinginto store Prunus salicina Lindley (Prunus triflora Roxburgh), intended for delivery in the fresh condition to the consumer. Plums should be put into the cold store as soon as possible after picking (not later than 12 h) and should be stored with It also applies to fresh fruits of certain semi-late and late produce having the least possible odour. The stores should varieties (cultivars) intended for processing. have been disinfected and should be free from odours. The limits of application are given in annex B. 3.4 Method of storage The containers should be handled with care. They should be 2 Reference placed on pallets and stacked to the height permitted by the store. A space of 1 m should be left between the top of the Iso2169,Fruits andvegetables-Physical conditions in cold stacks and the roof. If the packages are not sufficiently rigid for stores - Definitions and measurement. stacking, they may be placed on post pallets which should then be stacked to the height permitted by the store. Conditions of harvesting and putting into 4 Optimum storage conditions 3 store 4.1 Air temperature 3.1 Harvesting The mean air temperature in the cold store at a height of 1 m above the floor and in the passages between the stacks should Plums should be harvested during the coolest part of the day, be maintained at o to ioc for certain non-cold-resistant the best time being in the morning during dry weather. varieties whilst avoiding the formation of ice crystals in the fruit pulp. It is recommended that the plums be packed directly at or near the place of picking in rigid containers - usually boxes which 4.2 Relativehumidity can be placed on pallets - of suitable capacity so that the lower layers of fruits are not crushed. This avoids damage to The relative humidity of the air should be maintained between the fruits caused by transfer to other containers. 90and95%. 3.2 Qualitycharac