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https://www.selleckchem.com/products/diphenhydramine.html The aim of this study was to investigate the inhibitory effect of non-precursors amino acids (histidine, leucine, proline and methionine) which have advantages of safety, inexpensiveness and high standardization on the formation of β-carbolines in roast beef patties and glucose/creatine/creatinine/tryptophan model system, and the possible pathway of inhibition by monitoring the scavenging of free radicals by electron paramagnetic resonance (EPR) spectroscopy and the consumption of tryptophan by HPLC in a glucose/tryptophan model system. Almost all amino acids can inhibit β-carbolines in roast beef patties (up to 80.62%) and model system (up to 67.01%). Histidine showed an excellent alkyl radical scavenging ability (up to 82.59%) and a highly competitive inhibition ability (up to 65.60%) against β-carbolines generation. The corresponding abilities of leucine and methionine were less remarkable. Proline could only suppress β-carbolines through competitive inhibition. The results could shed light on the reduction of β-carbolines during meat processing.The performance of co-extruded alginate coatings containing no extra additives (A), polyglycerol esters of fatty acids (EA), or pea protein (PA) was assessed as an alternative to collagen casings (C) for the manufacturing of dry-fermented sausages (fuet) with no inoculation of moulds and without a fermentation step (NMNF) and fuet inoculated with Penicillium candidum and fermented (MF). Stuffing into collagen casings resulted in slower sausage drying kinetics compared with alginate coating. No significant differences in aw were observed among the studied casing types for NMNF and MF fuets and for the evolution of the technological and spoilage microorganisms. Fuets coated with A, EA, and PA showed lower pH values than fuets stuffed in collagen casings. No significant differences on sensory properties between casing types were observed. Therefore, alginate coatings

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