L-半胱氨酸盐酸盐对饼干中4种有害醛类和荧光晚期糖基化终产物的影响

将食品添加剂L-半胱氨酸盐酸盐添加到面团中制作饼干,研究了添加不同量(0.3,0.6,1.0,1.5g/kg)的L-半胱氨酸盐酸盐对饼干外观、4种有害醛类和荧光晚期糖基化终产物(AGEs)含量的影响。结果表明:L-半胱氨酸盐酸盐能使饼干色泽变亮,pH小幅下降。L-半胱氨酸盐酸盐显著降低5-羟甲基糠醛(HMF)、3-脱氧葡萄糖醛酮(3-DG)、乙二醛(GO)、丙酮醛(MGO)和荧光AGEs含量且呈剂量效应。当L-半胱氨酸盐酸盐的添加量为0.3g/kg时,饼干中HMF、3-DG、GO和MGO含量分别降低84.7%,13.7%,82.0%,72.1%,荧光AGEs降低8.9%。

Effect of L-cysteine hydrochloride on the contents of four toxic aldehydes and fluorescent AGEs in biscuits

In the current study, different levels of L-cysteine hydrochloride (0.3, 0.6, 1.0, 1.5 g/kg) were incorporated in dough for the preparation of biscuits to investigate the effect of L-cysteine on the appearance and the content of four toxic aldehydes and fluorescent advanced glycation end products(AGEs) in biscuits. The results showed that the addition of L-cysteine hydrochloride brightened the color of the biscuits, and cause a slight decrease in pH values. The incorporation of L-cysteine hydrochloride significantly decreased the content of 5-hydroxymethyl furfural(HMF), 3-deoxyglucosone(3-DG), glyoxal(GO), methylglyoxal(MGO) and fluorescent AGEs in biscuits in a dose-dependent manner. The addition of L-cysteine at the level of 0.3 g/kg decreased the contents of HMF, 3-DG, GO, MGO and fluorescent AGEs in biscuits by 84.7%, 13.7%, 82.0%, 72.1%, and 8.9% respectively.