In recent years, consumer complaints about dairy products have been frequent, and dairy quality problems have become the focus of social and livelihood concerns. It is urgent to build a whole-chain quality traceability system for dairy production and improve the traceability system of dairy products. This paper deeply analyzes the whole quality information flow of dairy production, and reviews the traceability technologies currently used in dairy production. This review is expected to provide innovative control strategies for improving the dairy management system and help diary producers in reducing consumer complaints about quality problems.

A spectrophotometric method for the determination of phosphorus content in formula milk powder forinfants and young children was developed. Under optimized experimental condiitons, the proposed method was highly reproducible and accurate. The following standard curve was established: y = 0.0372x + 0.0039 (R2 = 0.9997). The average recovery of this method was 98.5% with a RSD of 0.39%. Milk powder samples randomly selected from 30 commercial batches showed different levels of phosphorus, depending on age group. Three age groups decreasing order of phosphorus content were: young child’ formula milk powder, older infant’s milk powder and young infant’s milk powder, which were (448 ± 56), (382 ± 59) mg/g and (250 ± 58) mg/g, respectively. Morevoer, samples from different manufactures and the same age group also revealed greatly varying levels of phosphorus.

Objective: To investigate the effects of two lactic acid bacteria (LAB) preparations (pure cultures of Bifidobacterium animalis No.6 and Bifidobacterium animalis.subsp.lactis Bl Qq08) on plasma lipid levels of hyperlipidemic rats. Methods: SD rats were fed high fat diet to establish preventive hyperlipidemia models. SD rats were divided into the following groups: normal control, model control, low, middel and high dose Bifidobacterium animalis No.6, and low, middel and high dose Bl Qq08. After oral administration for 45 consecutive days, the effects of both LAB preparations on serum triglyceride (TG), total cholesterol (TC) and high density lipoprotein cholesterol (HDL-c) in hyperlipidemic rat models were observed. Results: Compared with normal control group, serum TG and TC in model control group increased significantly (P＜0.01) after 45-days high-fat feeding. Compared with model control group, serum TG and TC in low dose group of Bifidobacterium animalis No.6 fell significantly (P＜0.05), and the two indicators exhibited an extremely significant decrease in middle dose and high dose group of Bifidobacterium animalis No.6. Consistent results were found when comparing different dose groups of Bl Qq08 and model control group. Howeve, no significant difference in serum HDL-c existed among three dose groups for each LAB prepration. Conclusion: Both LAB preprations help reduce blood lipids.