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A novel antioxidant peptide was isolated from skipjack tuna bone collagen.

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Gelatin, a natural functional material obtained from animal connective tissues, has been broadly applied in health-related products such as food, pharmacy, and cosmetic. But unclear labelling and false information of animal origin of gelatin in those products would violate religious rules and increase public health risks. Recently, animal origin identification of gelatin-based products has drawn more and more concerns. Among various identification methods, liquid chromatography-mass spectrometry (LC-MS) has specifically become a research hotspot for animal origin identification and quantitative analysis of gelatin-based products due to its superior reliability, selectivity, and sensitivity. The main desideratum of the current treatise is to review the recent progress on this subject with respect to: (1) the identification of animal in halal gelatin-based products, (2) the determination of the authenticity of gelatinous medicines from animal, especially from the highly homologous family species, and (3) the quantification of gelatin in gelatin-based products, using LC-MS method. We hope that this review could provide theoretical guidance and advanced strategies for developing animal origin identification technologies for gelatin-based products.

Compared to fossil fuels, renewable fuels (biodiesel) are promising alternatives with similar properties which could reduce the emission of toxic gases and carbon foot print. Biodiesel is mostly used in some developing countries especially in the transportation sector and can be produced from vegetable oils, animal fats, non‐edible oil, and waste cooking oil by different methods. Animal fat and used cooking oil is not feasible for biodiesel production because of numerous problems during production. Catalysts can be selected or synthesized according to the nature of the feedstock. The selection of highly efficient catalysts is necessary to obtain a high yield of biodiesel and their recyclability is also highly important. Different factors affect the transesterification process and analysis of the final biodiesel product is important and necessary to fulfill the requirements of the American Society for Testing Materials (ASTM) standards. In this regard, production of biodiesel from different sustainable and renewable resources could be recommended at industrial level. Further research is required to improve the efficiency.