Overview

SIST ISO 8682:1996 - Apples: Storage in Controlled Atmospheres provides comprehensive guidelines for the optimal storage of apples in controlled environments. Developed by the International Organization for Standardization (ISO) and adopted by SIST, this standard is essential for apple producers, storage facility operators, food distributors, and anyone engaged in the apple supply chain. The standard specifies best practices for harvesting, pre-storage handling, and long-term storage using controlled temperature, humidity, and atmospheric composition to maximize apple shelf life and preserve quality.

Key Topics

Harvesting Guidelines
- Apples intended for controlled atmosphere storage should be harvested at the optimal stage of ripeness. Key indicators include seed color, starch presence, flesh firmness, ground skin color, ethylene production, and days since flowering.
- Only apples with excellent keeping characteristics and minimal defects should be selected, and manual harvesting is recommended.
Storage Preparation
- Apples should be transferred to cold stores within 24 hours of harvesting.
- Pre-sorting is necessary to eliminate damaged, diseased, or otherwise unsuitable fruit.
Controlled Atmosphere Conditions
- Temperature: Maintain a stable temperature tailored to the apple variety, typically between 0°C and 4°C.
- Relative Humidity: Keep humidity levels between 90% and 95% to prevent desiccation.
- Atmosphere Circulation: Ensure proper airflow to maintain atmosphere uniformity, with a recommended flow rate to ensure effective cooling and gas distribution.
Atmospheric Composition
- Regulation of oxygen and carbon dioxide levels is undertaken using air processing systems to retard metabolic processes, delay ripening, and limit disease development.
Quality Control and Monitoring
- Storage conditions must be checked daily for temperature, humidity, and atmospheric composition.
- Frequent inspection of apple quality throughout storage is crucial, especially towards the end of the storage period.
Defects and Disorders
- The standard lists microbial and physiological disorders that may develop during storage, such as bitter pit, scald, internal browning, carbon dioxide injury, and low temperature breakdown, along with preventative strategies.

Applications

The guidelines in SIST ISO 8682:1996 are widely used in:

Commercial cold storage operations for apples, to improve storage efficiency and minimize post-harvest losses.
Export and logistics management, where apples must withstand extended transportation and varying storage conditions without compromising quality.
Orchard management, particularly for selecting appropriate harvest times and handling varieties destined for long-term storage.
Food processing industries reliant on consistent apple quality throughout the year.
Quality assurance programs within agricultural organizations that require uniform product standards.

By following these controlled atmosphere storage practices, operators can ensure apples remain fresh, flavorful, and attractive for extended periods, meeting both local and international market demands.

Related Standards

For comprehensive management of fruit storage and handling, SIST ISO 8682:1996 should be used in conjunction with:

ISO 2169: Fruits and vegetables - Physical conditions in cold stores - Definitions and measurement
ISO 3659: Fruits and vegetables - Ripening after cold storage
ISO 6949: Fruits and vegetables - Principles and techniques of the controlled atmosphere method of storage

These related standards provide additional detail on definitions, measurements, and advanced handling techniques, establishing a robust framework for optimized apple storage under controlled atmospheres.

Keywords: apple storage, controlled atmosphere storage, apple quality, fruit preservation, cold storage, post-harvest handling, storage life, apple defects, storage best practices, ISO apple standard.

Overview

Key Topics

Harvesting Guidelines
- Apples intended for controlled atmosphere storage should be harvested at the optimal stage of ripeness. Key indicators include seed color, starch presence, flesh firmness, ground skin color, ethylene production, and days since flowering.
- Only apples with excellent keeping characteristics and minimal defects should be selected, and manual harvesting is recommended.
Storage Preparation
- Apples should be transferred to cold stores within 24 hours of harvesting.
- Pre-sorting is necessary to eliminate damaged, diseased, or otherwise unsuitable fruit.
Controlled Atmosphere Conditions
- Temperature: Maintain a stable temperature tailored to the apple variety, typically between 0°C and 4°C.
- Relative Humidity: Keep humidity levels between 90% and 95% to prevent desiccation.
- Atmosphere Circulation: Ensure proper airflow to maintain atmosphere uniformity, with a recommended flow rate to ensure effective cooling and gas distribution.
Atmospheric Composition
- Regulation of oxygen and carbon dioxide levels is undertaken using air processing systems to retard metabolic processes, delay ripening, and limit disease development.
Quality Control and Monitoring
- Storage conditions must be checked daily for temperature, humidity, and atmospheric composition.
- Frequent inspection of apple quality throughout storage is crucial, especially towards the end of the storage period.
Defects and Disorders
- The standard lists microbial and physiological disorders that may develop during storage, such as bitter pit, scald, internal browning, carbon dioxide injury, and low temperature breakdown, along with preventative strategies.

Applications

The guidelines in SIST ISO 8682:1996 are widely used in:

Commercial cold storage operations for apples, to improve storage efficiency and minimize post-harvest losses.
Export and logistics management, where apples must withstand extended transportation and varying storage conditions without compromising quality.
Orchard management, particularly for selecting appropriate harvest times and handling varieties destined for long-term storage.
Food processing industries reliant on consistent apple quality throughout the year.
Quality assurance programs within agricultural organizations that require uniform product standards.

Related Standards

For comprehensive management of fruit storage and handling, SIST ISO 8682:1996 should be used in conjunction with:

ISO 2169: Fruits and vegetables - Physical conditions in cold stores - Definitions and measurement
ISO 3659: Fruits and vegetables - Ripening after cold storage
ISO 6949: Fruits and vegetables - Principles and techniques of the controlled atmosphere method of storage

SIST ISO 8682:1996 PDF

Technical details

Abstract

Overview

Key Topics

Applications

Related Standards

Related standards

Abstract

Overview

Key Topics

Applications

Related Standards

Related standards

Fruits and vegetables -- Physical conditions in cold stores -- Definitions and measurement

Fruits and vegetables -- Ripening after cold storage

Fruits and vegetables -- Principles and techniques of the controlled atmosphere method of storage