LS/T 1224-2022 in English
VALIDTechnical specification for peanut storage
- Issued on:2022-03-15
- Implemented on:2022-09-15
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | LS/T 1224-2022 |
| Document status: | VALID |
| Title in English: | Technical specification for peanut storage |
| Title in Chinese: | 花生储藏技术规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2022-03-15 |
| Implemented on: | 2022-09-15 |
| ICS Classification: | 67.060-Cereals, pulses and derived products |
| Chinese Classification: | B20-Cereal crop and forage crop in general |
| Professional Classification: | LS-Cereal |
| Related Keywords: | peanut storage introduction interpretation
peanut kernels key technologies indicator type peanut fruit peanut kernel critical value safety moisture storage temperature storage parameters |
| Related Topics: | Tibetan
as1224 peanut reserve Beijing-Tibet Technology Beijing-Tibet Technology peanut box ls/t 3245 Peanut Cadmium LS/T 3211 storage Spark machine technical specifications lst 1224-2022 |
Introduction
Interpretation of the core content of the standard
This standard systematically stipulates the storage technical requirements for peanuts and peanut kernels for the first time, focusing on controlling the three core indicators of moisture content, storage temperature, and environmental hygiene. Compared with the old version of the standard, the technical parameters of controlled atmosphere storage and the clear definition of frostbitten kernels have been added.
Comparison of key technologies
| Indicator type | Peanut fruit | Peanut kernel | Critical value |
|---|---|---|---|
| Safety moisture | ≤10% | Large peanuts≤9% Small peanuts≤7% | Exceeding the limit by 3% requires emergency treatment |
| Storage temperature | ≤15℃ | Optimal 8-12℃ | |
| Environmental humidity | ≤70%RH | 50-65%RH is recommended | |
Analysis of implementation points
Typical problem handling solutions
Case: In 2021, a Shandong oil and fat enterprise stored peanut kernels and local mildew occurred. After detection, it was found that the core temperature reached 28°C, resulting in the accumulation of moisture and heat. According to clause 5.3.4 of this standard, mechanical ventilation (refer to LS/T 1202) was adopted in combination with warehouse dumping treatment to reduce the temperature to below 16°C within 48 hours.
Technical parameters of controlled atmosphere
- Nitrogen concentration: ≥95% (volume fraction)
- Carbon dioxide concentration: ≥40% (volume fraction)
- Requirements for airtight materials: in accordance with GB 4806.1 food grade standard
Analysis of standard evolution
This standard refines the special requirements for peanuts under the framework of GB/T 29890. The main technical breakthroughs are:
- For the first time, the storage parameters of peanuts and peanut kernels are distinguished
- The concept of dynamic moisture control is introduced (Clause 4.2.3)
- The sensory judgment standard for frostbitten kernels is clarified (Clause 3.3)
Safety production warning
According to Chapter 7 of the standard and LS 1206 requirements, special attention should be paid to the following:
- Dust explosion prevention: dust concentration in the working area must be <10g/m³ (GB 17440)
- Phosphine fumigation: before implementation, ensure that the air tightness of the warehouse is ≤0.02Pa⁻¹ (LS/T 1201)
- Mechanical damage: the height of the warehouse entry must be controlled within <2m (Clause 5.3.2.3)
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