College of Tourism, Huangshan University, Huangshan 245041, China.
Department of Tea and Food Science and Technology, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, China.
Molecules. 2022 Oct 25;27(21):7239. doi: 10.3390/molecules27217239.
In this study, self-made cat food attractant was prepared by Maillard reaction using hydrolysate of grass carp waste as raw material and glucose and cysteine hydrochloride as substrate. Its volatile compounds, antioxidant capacity, and pet palatability were investigated. The volatile compounds of attractants were analyzed using gas chromatography-mass spectrometry (GC-MS) which showed that alcohols and aldehydes were the most volatile in self-made attractants, accounting for 34.29% and 33.52%, respectively. Furthermore, Maillard reaction could significantly increase the antioxidant activity of self-made attractant, including scavenging activity on OH and DPPH free radicals as well as the chelating ability of Fe. The acceptance and palatability of two kinds of cat food were studied by adding 3% self-made or commercial attractants. The results of this study also found that both attractants could remarkably improve the intake rate of cat food. However, the self-made group was significantly less than the commercial group in first smell, first bite, and feeding rate, which might be because of the absence of umami ingredients and spices in self-made attractants.
本研究采用草鱼废弃物水解物为原料，葡萄糖和半胱氨酸盐酸盐为底物，通过美拉德反应制备了一种自制猫粮诱食剂。研究了其挥发性成分、抗氧化能力和宠物适口性。使用气相色谱-质谱联用仪（GC-MS）分析了诱食剂的挥发性成分，结果表明，自制诱食剂中最易挥发的是醇类和醛类，分别占 34.29%和 33.52%。此外，美拉德反应可显著提高自制诱食剂的抗氧化活性，包括对 OH 和 DPPH 自由基的清除能力以及对 Fe 的螯合能力。通过添加 3%自制或商业诱食剂研究了两种猫粮的接受度和适口性。研究结果还发现，两种诱食剂都能显著提高猫粮的摄入量。然而，在初次闻味、初次咬食和进食率方面，自制组明显低于商业组，这可能是因为自制诱食剂中缺乏鲜味成分和香料。
