In some situations. the action of indigenous enzymes is essential to develop the final flavor and texture in products such as fruits and vegetables，tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar.

the action of indigenous enzymes is essential是主系表的主句， 不定式 to develop the final flavor and texture in products such as fruits and vegetables，tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar.全做状语？不定式 to develop有4个并列宾语the final flavor and texture in products such as fruits and vegetables，tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar？

In some situations, the action of indigenous enzymes is essential to develop the final flavor and texture in products such as fruits and vegetables, tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar.

【翻译】在有些情况下，原生质酶的作用对于孕育水果和蔬菜等产品、肉类嫩化、干酪成熟、淀粉转化为可发酵糖的最终风味和质地，至关重要。

【分析】本句全句是个简单句，不是复合句。

1. the action of indigenous enzymes is essential是主系表，句中的主要成分。 

2. 不定式 to develop the final flavor and texture in products such as fruits and vegetables，tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar. 全做状语。是is essential 的“方面状语”，或者“补充状语”，让essential的意义完整。

3. 不定式 to develop有一个宾语：the final flavor and texture。

4. in products such as fruits and vegetables，tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar是介词短语，表示“在......方面”，作the final flavor and texture 的定语。

5. in 后面有4个并列的宾语：

products such as fruits and vegetables：水果和蔬菜等产品

tenderizing of meat：肉类嫩化

ripening of cheese：干酪成熟

conversion of starch into fermentable sugar：淀粉对可发酵糖的转化