This study evaluated the use of an optical inspection system (OIS) to determine the freshness of mackerel (Scomber japonicus). The correlations between the light reflection intensity (LRI) of mackerel eyes (determined using an OIS) and the volatile basic nitrogen content (VBN) and K-value were analyzed. After unloading at the harbor, the mackerel were stored at 4 °C for 9 days and the VBN, K-value, and LRI were determined at 3-day intervals. During storage, the LRI, VBN, and K-value all increased. Furthermore, the LRI was correlated with the K-value and VBN. Therefore, although the LRI cannot be applied as an absolute standard for evaluating freshness, the LRI using an OIS is a suitable nondestructive method for evaluating freshness for quality and risk management in the processing industry when handling large numbers of fish.

中文翻译：

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光学检测系统在确定低温储存的刺槐（鲭鱼）新鲜度方面的新颖应用。

这项研究评估了使用光学检查系统（OIS）来确定鲭鱼（Scomber japonicus）的新鲜度。分析了鲭鱼眼的光反射强度（LRI）（使用OIS测定）与挥发性碱性氮含量（VBN）和K值之间的相关性。在港口卸货后，将鲭鱼在4°C下保存9天，并以3天为间隔确定VBN，K值和LRI。在存储期间，LRI，VBN和K值都增加了。此外，LRI与K值和VBN相关。因此，尽管不能将LRI用作评估新鲜度的绝对标准，但是在处理大量鱼类时，使用OIS的LRI是一种合适的非破坏性方法，可以为加工行业的质量和风险管理评估新鲜度。