873 International Standard (ISO INTERNATIONAL ORGANIZATION FOR STANDARDIZATION-MEKAYHAPOAHAR OPTAHM3AUMR NO CTAHAAPTM3ALMM-QRGANISATION INTERNATIONALE DE NORMALISATION Peaches - Guide to cold storage Peches-GuidepourI'entreposagerefrigere Firstedition-1980-08-15 UDC634.25:664.8.037 Ref.No.1SO873-1980 (E) 0873-1980( Descriptors : agricultural products, fruits, peaches, storage, cold storage. FOREWORD ISo (the International Organization for Standardization) is a worldwide federation of national standards institutes (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 set up 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 the Iso Council. International Standard ISO 873 was developed by Technical Committee ISO/TC34, Agricuituralfoodproducts. It was submitted directly to the IsO Council, in accordance with clause 5.10.1 of part 1 of the Directives for the technical work of IsO. It cancels and replaces IS0 Recommendation R873-1968, which had been approved by the member bodies of the following countries : Australia Germany,F.R. Romania Brazil Hungary South Africa, Rep. of Bulgaria India Turkey Chile Iran United Kingdom Colombia Israel USSR Czechoslovakia Italy Yugoslavia Egypt, Arab Rep. of NewZealand France Poland The member body of the following country had expressed disapproval of the document on technical grounds : Netherlands International Organization for Standardization,1980 Printed in Switzerland INTERNATIONALSTANDARD ISO873-1980 (E) Peaches Guide to cold storage 1 SCOPEANDFIELDOFAPPLICATION 3.2 Quality characteristics for storage This International Standard describes methods for obtaining Only fruit of quality"extra"and"",the characteristics of conditions for the successful cold storage of varieties of which are defined in AGRI/WP 1/EUR.STAN.6, should be peaches (peaches, nectarines and clingstone peaches) put into store. obtained from Prunus Persica Sieb. and Zucc. immediately Fruit put into cold store should be sound, free from bruises after picking until their use in the fresh state. or physiological disorders and free from any visible sign of The limits of application of these methods are given in fungal or bacterial attack. It should also be clean. annex A. 3.3Varioustreatments 2REFERENCES For most varieties, the fruit should be rapidly cooled after IsO2169,Fruits and vegetables-Physical conditions in harvesting. Certain varieties, for example Elberta and Red cold stores-Definitions and measurement. Haven, are sensitive to this treatment, however, and show a tendency to a cotton-wool texture. Treatment with iced AGRIWP1/EUR.STAN.6. Peaches (revised European water, to which sodium hypochlorite has been added, has Standard,recommended bythe Working Group on sometimes been recommended, as has treatment with wax. standardization of perishable goods, of the Economic Commission for Europe). 3.4 Putting into store The fruit should be put into the cold store as soon as 3 CONDITIONSOFHARVESTANDPUTTING INTO STORE possible after harvesting. 3.1 Harvesting 3.5 Method of storage It is difficult to characterize the degree of maturity for The fruit should be handled with care. Packages should harvesting. The practical criteria of maturity most fre- contain only a single layer of fruit.Storage densities of quently used for determining the best time for harvesting the order of 200 to 220 kg per cubic metre of usable space are : are recommended for a stack of pallets. the basic ground colour1) of the outer skin; the hardness of the flesh, estimated by means of a spring penetrometer; the age of the fruit from full