QB/T 3778-1999 Crude lactose

This standard applies to crude lactose made from whey through processes such as crystallization and drying. QB/T 3778-1999 Crude lactose QB/T3778-1999 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Semifinished lactose
QB/T3778-1999
This standard applies to crude lactose made from whey through crystallization, drying and other processes. Technical requirements
This product can be used to prepare lactose for biological fermentation preparations and as a raw material for refined lactose. 1.1
The quality of crude lactose is measured by sensory and chemical indicators. According to chemical indicators, it can be divided into first-grade and second-grade products. 1.2
The sensory indicators of crude lactose should meet the requirements of Table 1. Table 1
Taste and smell
Granular state
Has the unique sweet taste of lactose, no sour taste, burnt taste and odor, can pass through 30 mesh sieve, in crystal or powder form
Light yellow, no brown
No mechanical impurities
The chemical indexes of crude lactose shall meet the requirements of Table 2. Table 2
Crude lactose
Chloride, %
Ash, %
Moisture, %
1.5Microbiological indexes of crude lactose, the product shall not contain pathogenic bacteria. Sampling and inspection
2.1 Sampling
2.11 Products shall be divided into batches according to production shifts. If continuous production cannot be divided into shifts, they shall be divided into batches according to production dates. 2.1.2 Products shall be numbered in batches and sampled and inspected according to batch numbers. For crude lactose packaged in cloth bags, unpack the bags according to 1/20 of the total number of samples, use a sterilized open sampling stick to take one sample from each of the four corners and the center and place it on a plate, and take 1/100 of the bag weight for inspection. For bags with more than 20 pieces, take no less than two samples, and for bags with less than 20 pieces, take one sample, but the total sampling volume shall not be less than 500g. 2.1.3 The samples taken shall be labeled with the following items: a. Product name; b. Factory name and manufacturing date: c. Sampling date; d. Product quantity and batch number. 2.2 Inspection procedures 2.2.1. The sensory and physical and chemical indicators of the product are mandatory inspection items for each batch. Microbiological indicators shall be regularly sampled by the factory laboratory or the health and epidemic prevention department. Mercury shall be regularly sampled by the health and epidemic prevention department. 2.2.2 When the finished product leaves the factory, it must be accompanied by a quality certificate from the factory laboratory or inspection department, which shall indicate: product name, quantity, production date, manufacturing method, test results and quality grade. 2.3 Re-test
The re-test of crude lactose is the same as Article 2.3 of GB5424-85 "Industrial Casein". However, re-testing is not allowed if pathogenic bacteria are detected. 3 Packaging and marking
3.1 Crude lactose is packaged in large packages with a net weight of 30kg, lined with plastic bags, and covered with a cloth bag or other sturdy packaging bags on the outside. Other packaging specifications can be handled according to the contract. 3.2 The packaging cloth bag should indicate:
a. Product name and grade;
b. Trademark;
c. Net weight;
d. Production date;
e. Manufacturer name.
4 Storage and transportation
4.1 The product should be stored in a clean, dry and well-ventilated warehouse. 4.2 The product should be shipped in bags and covered during transportation to prevent it from getting wet by rain. Additional notes:bzxZ.net
This standard was proposed by the Ministry of Light Industry of the People's Republic of China and is under the jurisdiction of the Heilongjiang Dairy Industry Research Institute. This standard was drafted by the Heilongjiang Dairy Industry Research Institute and the Hailar Dairy Factory. The main drafters of this standard are Zhang Xielin, Zhang Baofeng, Li Yuxian and Yu Yunhua. Issued by the National Bureau of Standards on September 28, 1985
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Implementation on August 1, 1986
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