Evaluation indicators of Ruditapes philippinarum nutritional quality
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ORIGINAL ARTICLE
Evaluation indicators of Ruditapes philippinarum nutritional quality Lipin Chen1 • Fanqianhui Yu1 • Shuhong Sun2 • Xiangyu Liu1 • Zhongkai Sun1 Wanxiu Cao1 • Shengnan Liu1 • Zhaojie Li1 • Changhu Xue1
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Revised: 2 September 2020 / Accepted: 15 September 2020 Ó Association of Food Scientists & Technologists (India) 2020
Abstract To access the nutritional quality of the Ruditapes philippinarum, a comprehensive quality evaluation procedure is always important to be established. In this study, fifteen nutritional quality evaluation indicators of R. philippinarum from 7 months were analyzed, and the most important indicators were determined using a combination of multiple chemometric methods such as correlation analysis (CA), principal component analysis (PCA), and system cluster analysis (SCA). Significant differences in nutritional quality were observed across the 7 months, as per the ANOVA results (P \ 0.05). The coefficient of variation values for the fifteen evaluation indicators for R. philippinarum across 7 months was 1.67–43.47%. The CA results revealed that some indicators were correlated to each other within a certain range. Four principal components with eigen-values [ 1 were obtained with PCA, and a cumulative contribution of 92.11% was achieved. In addition, four essential quality indicators were extracted using SCA. Using these four indicators, a simple and efficient procedure can be applied for quality control in aquaculture.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s13197-020-04796-6) contains supplementary material, which is available to authorized users. & Zhaojie Li [email protected] 1
College of Food Science and Engineering, Ocean University of China, Qingdao 266003, Shandong, People’s Republic of China
2
Qingdao Center Hospital, Qingdao 266042, Shandong, People’s Republic of China
Keywords Ruditapes philippinarum Evaluation indicator Seasonal variation Chemometric evaluation
Introduction Ruditapes philippinarum is an important shellfish both in China and in the rest of the world that is rich in nutrients, including proteins, vitamins, and essential elements, and has become common in the human diet (Zhao and Zhang 2016a). Aquaculture production of R. philippinarum has expanded rapidly in recent decades. In China, R. philippinarum is mainly produced in Shandong province, especially in Jiaozhou Bay (Jiang 2014; Zhao and Zhang 2016b). Jiaozhou Bay is an important shellfish source, located in the northwest of the Yellow Sea (Zheng and Yan 2011). The area is rich in phytoplankton, has ambient water temperature, salinity, and pH, special muddy tidal flats, and many coastal rivers. These rivers carry some sediment and low-salt water into the sea every year, bringing in nutrients that provide good growth conditions for high-quality clams. The unique natural environment provides good conditions for Jiaozhou Bay clams which are famous for their thin shell, delicate meat, and delicious taste (Jiang 2014). However, their hab
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