Browning reaction occurred obviously during processing casein used Qula.是什么意思？

Browning reaction occurred obviously during processing casein used Qula.

曲拉制作干酪素的工艺过程发生了明显的褐变反应.

Browning

n. （调制肉汁用的）棕色着色剂，褐化；

例句
There were many gorgeous females busy browning themselves.
有许多漂亮的女性忙着晒黑自己。

reaction

n. 反应，反作用力，反动，保守；

例句
When Chappel approached me about the job, my first reaction was of disbelief...
当查普尔为这份工作找我商量时，我的第一反应是不相信。

occurred

v. 发生(occur 的过去分词)；

例句
The deaths occurred when police acted to stop widespread looting and vandalism...
警方采取行动制止猖狂的打砸抢行为时有多人丧生。

obviously

adv. 明显地；

例句
I thought he was very attractive and obviously very intelligent...
我觉得他魅力非凡，才智过人。

during

prep. 在…的时候，在…期间，当…之时，其间；

例句
...the accrual of funds used during construction.
建设过程中资金的累积

processing

n. （数据）处理，整理，配置，工艺（生产方法）设计；v. 加工( process的现在分词 )，处理，审阅，审核；

例句
Tea processing requires both technique and artistry.
茶叶加工对工艺和手法都有要求。

casein

n. 干酪素，酪蛋白；

例句
Rich in calcium, Casein helps contribute to milk's white color.
富含钙质的干酪素对牛奶呈现白色起到一定作用.

used

adj. 用过的，习惯于，二手的，旧的；v. 使用（ use的过去式和过去分词），常常，经常；

例句
The gym can be used by both able-bodied and disabled people.
这家健身房健全和残障人士都可使用。