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A preliminary study on the quality of street vended foods around a university in Kunming China

机译：中国昆明大学街头零售食品质量初探

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摘要

The street vended foods (SVF) are very popular in China, particularly in highly adolescents populated regions such as schools. Food quality is a critical global issue, but there are few studies describe the quality assessment of SVF. In this study, the quality of SVF around a university in Kunming was evaluated, including the microbial quality, proximate composition, oil quality, and heavy metal content. Microbial results showed that the aerobic plate count (APC) and Escherichia coli (E. coli) counts ranged from 1.94 to 7.43 log CFU/g or ml, and 0.53 to 1.48 log CFU/g or ml, respectively. A portion of fried snack samples exceed the standard limit of acid value (AV) and peroxide value (POV), and the same result was observed in carbonyl group value (CGV), thiobarbituric acid (TBA) value, viscosity, and conductivity. The proximate composition of the fried snack samples varied widely, while the fat content was generally higher. The heavy metal analysis showed most samples met the safety standards, with the content of 12–51, 1–19, 12–73, and 11–88 μg/kg for As, Hg, Cd, and Pb, respectively. In conclusion, although the overall results of this study were satisfying, more attention should be given to the quality of SVF. Consequently, there is a need for additional measures to protect consumers, particularly young adults in college, from foodborne disease.
机译：街头驾驶的食物（SVF）在中国非常受欢迎，特别是在高度青少年人口稠密的地区，如学校。食品质量是一个关键的全球问题，但很少有研究描述了SVF的质量评估。在这项研究中，评估了昆明大学的SVF质量，包括微生物质量，近似的组成，油质和重金属含量。微生物结果表明，有氧板数（APC）和大肠杆菌（大肠杆菌）的计数分别为1.94至7.43对数CFU / g或mL，分别为0.53至1.48 Log CFU / g或mL。油炸零食样品的一部分超过了酸值（AV）和过氧化物值（POV）的标准极限，并且在羰基值（CGV），硫酰比脲酸（TBA）值，粘度和电导率中观察到相同的结果。油炸零食样品的近似组成广泛变化，而脂肪含量通常较高。重金属分析显示大多数样品均匀达到安全标准，含量为12-51,1-19,12-73和11-88μg/ kg，分别为Hg，Cd和Pb。总之，虽然本研究的总体结果令人满意，但应更加关注SVF的质量。因此，需要额外的措施，以保护消费者，特别是年轻人在大学中，来自食源性疾病。

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