期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 98, 期 7, 页码 2642-2650出版社
WILEY
DOI: 10.1002/jsfa.8757
关键词
eggs; freshness; pointed end; blunt end; automatic orientation
资金
- National Natural Science Foundation of China [51575243]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [11KJA550002]
- Priority Academic ProgramDevelopment of Jiangsu Higher Education Institutions
BACKGROUNDHigh-quality eggs in unified packaging are desired by egg production enterprises. Automatic orientation apparatus is frequently used to orient eggs uniformly to pointed-end-down position for packaging. However, such apparatus may not work accordingly if the eggs are stored under improper methods or for excessive storage time. To study the effect of egg freshness on the efficiency of automatic orientation process, the relationship between egg freshness and its orientation motions was investigated under different storage conditions. RESULTSThe results showed that as the storage time increased, centroid position and pointed-end-down turnover ratio decreased; other parameters such as eggs' obliquity at stationary state, horizontal deflection angle, speed, acceleration of axial motion, side-slip angle and rolling distance increased. However, the effects of storage time on the guiding distance of the guide rod were not apparent. In addition, the higher the storage temperature, the greater the changes of the final orientation states of eggs on the conveyor line. If the eggs were to be oriented uniformly, they should be stored for less than 25, 16, 10 and 7days at 10 degrees C, 18 degrees C, 26 degrees C and 34 degrees C, respectively, under a relative humidity of 75%. CONCLUSIONThe experimental results presented in this paper are very useful for quality control and quality assurance in egg production enterprises. (c) 2017 Society of Chemical Industry
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