本文選題：樺褐孔菌多糖 + 乙�；���； 參考：《食品工業(yè)》2017年12期

【摘要】：以樺褐孔菌多糖IOP3a為原料,采用乙酸酐法制備乙酰化樺褐孔菌多糖(Ac-IOP3a),以乙�；〈葹橹笜�(biāo),考察乙酸酐用量、反應(yīng)溫度和反應(yīng)時(shí)間對(duì)取代度的影響。在單因素試驗(yàn)的基礎(chǔ)上,采用響應(yīng)面法對(duì)IOP3a乙酰化工藝進(jìn)行優(yōu)化,并通過Ac-IOP3a對(duì)·OH、DPPH·和O_2~-·的清除作用探討其抗氧化活性。結(jié)果表明,樺褐孔菌多糖IOP3a乙�；罴压に嚍�:乙酸酐用量3.3 mL(固定IOP3a多糖量100 mg),反應(yīng)時(shí)間3.1 h,反應(yīng)溫度64℃,在此條件下,Ac-IOP3a的取代度為0.416�？寡趸芯勘砻�:與IOP3a多糖相比,Ac-IOP3a多糖的抗氧化活性明顯增強(qiáng)。
[Abstract]:Ac-IOP3a was prepared by acetic anhydride method from IOP3a. The effects of acetic anhydride dosage, reaction temperature and reaction time on the degree of substitution were investigated. On the basis of the single factor experiment, the IOP3a acetylation process was optimized by response surface method, and the antioxidant activity of Ac-IOP3a was investigated by the scavenging effect of Ac-IOP3a on OH-DPPH and O _ 2P _ 2 ~ (-). The results showed that the optimum conditions of IOP3a acetylation were as follows: the amount of acetic anhydride was 3.3 mL, the reaction time was 3.1 h, the reaction temperature was 64 鈩，

本文編號(hào)：1826244