Amino Acid Profiling with Chemometric Analysis as a Feasible Tool for the Discrimination of Marine-Derived Peptide Powders

Abstract

Marine-derived peptide powders have suffered from adulteration via the substitution of lower-price peptides or the addition of adulterants in the market. This study aims to establish an effective approach for the discrimination and detection of adulterants for four representative categories of marine-derived peptide powders, namely, oyster peptides, sea cucumber peptides, Antarctic krill peptides, and fish skin peptides, based on amino acid profiling alongside chemometric analysis. The principal component analysis and orthogonal partial least squares discriminant analysis results indicate that four categories of marine-derived peptides could be distinctly classified into four clusters and aggregated with the respective raw materials. Taurine, glycine, lysine, and protein contents were the major discriminants. A reliable classification model was constructed and validated by the prediction dataset, mixture sample dataset, and unclassified sample dataset with accuracy values of 100%, 100%, and 100%, respectively.

Marine Bioactive Peptides: Anti-Photoaging Mechanisms and Potential Skin Protective Effects

“…The potent anti-inflammatory properties of marine peptides have been extensively documented in the scientific literature [69]. Specifically, gelatin hydrolysate derived from the skin of Pacific cod has been found to effectively mitigate inflammation caused by UV radiation [38].…”

Physicochemical Characterization and Comparative Analysis of Ribulose 1,5 Biphosphate Carboxylase-Oxygenase Like Proteins (RLP) from Halophilic Chromohalobacter salexigens BKL 5 and Non-Halophilic Counterparts Using in Silico Approaches

“…Computational analysis has become a new approach to accelerate research in the protein field [8]. The essence of computational analysis is finding patterns and distribution in existing data and subsequently making predictions for new datasets.…”

Amino Acid Fingerprinting of Authentic Nonfat Dry Milk and Skim Milk Powder and Effects of Spiking with Selected Potential Adulterants

“…Cotte et al (2004) [ 22 ] used amino acid fingerprint to discriminate different botanical origins of honey. It has also been used to determine authenticity of some fruit juices [ 23 ] and in differentiating various meats [ 24 ], and separating milk from non-milk proteins [ 25 ], and detection of adulteration in marine powders [ 26 ]. Recently, it has been used to identify the geographical origin of milk samples [ 27 ].…”