Alpha-1-antitrypsin level and serum trypsin inhibitory activity were measured in patients with viral hepatitis, chronic hepatitis and liver cirrhosis. The most pronounced discrepancy between these two parameters were observed in patients with liver cirrhosis: the increase of alpha-1-At level was not accompanied by adequate increase of trypsin inhibitory activity. Some mechanisms potentially responsible for this discrepancy are discussed.
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Int J Biol Macromol
January 2025
College of Food Science & Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing 100083, China. Electronic address:
Malt protein Z (PZ), the main albumin in malt endosperm, exhibits trypsin inhibitory activity and has the ability to bind fat-soluble active molecules. However, its potential utilization as a food ingredient necessitates an evaluation of its allergenicity. Lycopene has many functional activities, such as antioxidant and treatment or alleviation of various diseases, but its tendency to degrade easily hinders its effective utilization.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Center for Mitochondria and Healthy Aging, School of Life Sciences, Yantai University, Yantai 264005, China; College of Life Sciences, Yantai University, Yantai 264005, Shandong, China. Electronic address:
Erectile dysfunction (ED) is a male sexual disorder mainly caused by a reduction in the cellular concentration of cyclic guanosine monophosphate (cGMP), which is degraded by phosphodiesterase type-5 (PDE-5). Oyster protein (OP) and its hydrolysates have been used for centuries to address male erectile dysfunction, however the mechanisms and evidence supporting their efficacy remain unclear. In this study, OP was hydrolyzed using trypsin to produce peptides that inhibit PDE-5.
View Article and Find Full Text PDFFoods
December 2024
Key Laboratory of Biotechnology and Bioresources Utilization, College of Life Sciences, Dalian Minzu University, Ministry of Education, Dalian 116600, China.
α-amylase can effectively inhibit the activity of digestive enzymes and alter nutrient absorption. The impact of ovum hydrolysates of sea cucumbers on α-amylase activity was investigated in this study. The protein hydrolysates generated using different proteases (pepsin, trypsin, and neutral protease) and molecular weights (less than 3000 and more than 3000) were investigated.
View Article and Find Full Text PDFAntioxidants (Basel)
December 2024
Department of Chemistry and Biochemistry, Faculty of Agriculture, University of Belgrade, 11080 Belgrade, Serbia.
Bee products are an important source of nutrients and bioactive phytochemicals. This study aimed to determine the chemical composition (proximate composition, general phytochemical composition, sugar, and phenolic profiles) of four different products (honey, bee pollen, bee bread, and propolis), obtained from the same apiary, as well as to assess their biological activity through antioxidant and enzyme inhibition assays (α-amylase, α-glucosidase, lipase, AchE, neuraminidase, angiotensin-converting enzyme, urease, trypsin, tyrosinase, carbonic anhydrase, thioredoxin reductase, adenosine deaminase). Clear differences were observed among the samples in terms of both chemical composition and biological activity.
View Article and Find Full Text PDFFood Chem
December 2024
Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830017, China. Electronic address:
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