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The results showed that there was a negative relationship between H2O2 content and CAT activity, thus H2O2 content was low when CAT activity was high. There was a close relationship between H2O2 content and differentiation process. H2O2 could be an important signal transduction factor during bud differentiation. IAA oxidase activity was decreased firstly, and then increased, which affected IAA oxidase and degradation pathway and regulate ratio of cytokinin and auxin. With differentiation process continuing, PPO activity was increased, which could cause browning or vitrifaction of seedling, or even malformation.

研究结果表明，鹅掌楸组培再生过程中，过氧化氢酶活性与H2O2含量变化呈负相关，CAT活性较高时，H2O2含量则较低。H2O2含量与鹅掌楸组培苗分化进程密切相关，H2O2可能作为信号因子在芽分化过程中发挥重要作用；IAA氧化酶活性呈现先下降后增加的变化规律，从而影响IAA氧化降解途径，调控细胞分裂素与生长素含量的比值，影响鹅掌楸芽的再生；PPO活性随培养时间的增加而升高，引起组培苗的褐变或玻璃化，甚至生长畸形。

Antioxidants of 100 mg/L PVP, 100 mg/L Vc and sorbent of 500 mg/L AC can control browning efficiently. PVP and Vc restrain callus growth, whenas AC can stimulate it.

5mg/L GA3为组培苗的最佳生根培养基，生根率达100%；一定浓度的PVP，Vc或者AC能有效控制褐变现象的发生。

An orthogonal experiment was carried out to investigate the effects. Browning and diet cellulose of Agaricus blazei in keep fresh was analyzed.

采用正交实验方法，分析了不同处理对姬松茸的褐变程度及膳食纤维素的影响。

The effect of polyamines on callus browning and synthesis of endogenous polyamines and enthene during the development of callus,which initiated from mature embryo of Buchloe dactyloides texoka,was studied.

以野牛草成熟胚诱导的愈伤组织为材料，研究了外源多胺对愈伤组织褐化的影响及愈伤组织不同生长时期内源多胺和乙烯合成代谢规律。

The results of the experiment show that the main non-enzymatic browning reactions are Maillard and caramelization reaction, and VC or polyphenol does not play an important role in the color formation.

结果显示：美拉德反应和焦糖化是主要的非酶褐变反应，VC、多酚类物质对颜色形成不起主要的贡献作用；果糖和蔗糖在非酶褐变反应中起重要的作用，葡萄糖的作用几乎可忽略不计。

Non-enzymatic browning results from caramelization and the Maillard reaction to produce melanins.

非酶棕色着色剂形成于焦糖形成过程以及梅拉德反应中产生的黑色素。

Lab model consists of three tunnels, the L channel represents the brightness, which controls the brightness and contrast of a picture, a channel including color from caroba to gray to bright pink, and b channels including color from a bright blue to the grey to Browning.

Lab模式由三个通道组不败，L通道表示光度，它把持图片的光度和差比度，a通道包含的颜色从深绿到灰色到光粉红色，b通道包含的颜色从光蓝色到灰色到焦黄色。

Lab model consists of three channels, L channel represents the brightness, which controls the brightness and contrast of a picture, a channel including color from caroba to gray to bright pink, and b channels including color from a bright blue to the grey to Browning.

Lab模式由三个信道组不败，L信道表现光度，它把持图片的光度和不不差比度，a通道包含的颜色从深绿到灰色到光粉白色，b通道包含的颜色从光蓝色到灰色到焦黄色。

Lab model consists of three tunnels, the L channel represents the brightness, which controls the brightness and contrast of a picture, a channel including color from caroba to gray to bright pink (high-brightness value), and b channels including color from a bright blue to the grey to Browning (high-brightness value).

Lab模式由三个通道组成，L通道表示亮度，它控制图片的亮度和对比度，a通道包括的颜色从深绿到灰色到亮粉红色，b通道包括的颜色从亮蓝色到灰色到焦黄色。

Lab model consists of three tunnels, the L channel represents the brightness, which controls the brightness and contrast of a picture, a channel including color from caroba to gray to bright pink (high-brightness value), and b channels including color from a bright blue to the grey to Browning (high-brightness value).

Lab模式由三个通道组不败，L通道表现光度，它把持图片的光度和不不差比度，a通道包含的颜色从深绿到灰色到光粉白色，b通道包含的颜色从光蓝色到灰色到焦黄色。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。