Chuanbao Wang , Haishen Li , Minda Zhang , zhi'an Wang , Qingsong Shao , Jian Sun
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引用次数: 0
Abstract
Rubi Fructus (RF), a traditional Chinese herb derived from the dried immature fruit of Rubus chingii Hu., exhibits chemical composition and economic value that are significantly influenced by processing methods. Comparative analysis using HPLC fingerprinting and near-infrared spectroscopy (NIRS) revealed significant differences between infiltration-and-redrying (IAR) processed RFs and one time direct dried (OTDD) samples, indicating that IAR processing induces substantial chemical changes. The ellagic acid concentration demonstrated a time-dependent pattern during infiltration, initially increasing before subsequently decreasing. Notably, IAR RFs showed increased ellagic acid content by up to 61.76 % than OTDD control. Partial least squares discriminant analysis (PLS-DA) of NIRS data effectively distinguished IAR samples, with the multiple scattering-corrected model achieving R2Y and Q2 values of 0.8280 and 0.6220, respectively. Quantitative analysis demonstrated that the Savitzky-Golay (SG) smoothed PLS model provided optimal accuracy for calculating ellagic acid and kaempferol-3-O-rutinoside (KR) content. Subsequent synergy interval PLS (si-PLS) treatment further enhanced model performance, getting test set correlation coefficients (Rp2) of 0.9930 and 0.7954 for the respective compounds.
期刊介绍:
LWT - Food Science and Technology is an international journal that publishes innovative papers in the fields of food chemistry, biochemistry, microbiology, technology and nutrition. The work described should be innovative either in the approach or in the methods used. The significance of the results either for the science community or for the food industry must also be specified. Contributions written in English are welcomed in the form of review articles, short reviews, research papers, and research notes. Papers featuring animal trials and cell cultures are outside the scope of the journal and will not be considered for publication.