鸡头明胶提取工艺优化及产物特性分析

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Abstract：To address the problem of low utilization rate and insufficient high-valuedevelopmentof chicken heads as arawmaterial，the hot water extractionof gelatin fromchicken heads wasoptimizedusing three different pretreatment methods，namelycid，alkalie-acid，andacid-enymaticmethods.Theeffectsofextractiontemperature （55，6and （20号 65°C ）and time （3，4.5 and 6h ）on the yield of gelatin were examined. The extraction parameters were optimized using single-factor experiments，andtheobtained product was characterized.The results indicated thatthe optimum extraction conditions that provided maximum yield of gelatin were determined as 60∘C and 6h for extraction temperature and time， respectively，irespectiveofthepretreatment methodused.Theyieldof gelatin was highestusingthealkaline-acidmethod （20 （10.08%） ）followedbytheacid-enzymaticmethod （9.08%） withtheacid method givingthelowestvalue （2.52%） .The gelatinpreparedbythealkaline-acidmethodexhibitedthetypicalcharacteristicsof typeAgelatinandwascharacterizedby high protein content （73.33%） ，low ash content （0.90% ），moderate solubility （66.81%） ，wide pH adaptability，and excellent low-temperature procesingadaptability.Inconclusion，the alkaline-acid method enabled the simultaneous achievementof eficientextractionand high-valueconversionof gelatin from chicken heads.Thecomprehensive performance ofthe product Wwas significantly superior to that of the gelatin prepared by the acid and acid-enzymatic methods.

Keywords： chicken heads; gelatin; optimization of extraction process; alkaline-acid method; hot water extraction DOI：10.7506/rlyj1001-8123-20250621-199

中图分类号：TS201.1

文献标志码：A 文章编号：1001-8123（2026）05-0036-09

近年来，由于肉鸡生产和消费量的持续增长，鸡副产物废弃量也逐年增加。（剩余21356字）