1 Introduction
1.1 Introduction 2 onions
The nutritional content of 1.2 onion 2
1.3 The health onion 2
1.4 juice vegetable juice clarification method 3
1.4.1 Enzyme treatment 3
1.4.2 deal with ultrafiltration membrane 4
1.4.3 to clarify the 5-treated
1.5 to clarify the preservation methods of onion juice 5
1.5.1 Preservation potassium sorbate 5
1.5.1 Preservation of citric acid 5
1.6 Prospect of 6
2 Materials and Methods 6
2.1 Test materials, equipment and reagents 6
2.1.1 Test Materials 6
2.1.2 Test apparatus 6
2.1.3 Test Kit 7
2.2 Test Method 7
2.2.1 Preparation of onion juice 7
2.2.2 onion juice clarification 7
2.2.3 to clarify the clarification of onion juice preservation 7
3 Results and Analysis 7
3.1 onion juice pectinase treatment to determine the optimal dosage of 7
3.2 onion juice pectinase processing time to determine the optimum water bath 8
3.3 pectinase treatment of onion juice to determine the optimum water temperature of 9
3.4 Orthogonal analysis of onion juice pectinase to clarify the role of the optimal conditions for 10
3.5 to clarify the preservation of onion juice test 11
3.5.1 to clarify the degree of cold storage on the impact of 11
3.5.2 to clarify the degree of citric acid on the impact of 12
3.5.3 Potassium Sorbate onion juice during the period of preservation to clarify the impact of 14 degrees
Potassium sorbate and citric acid 3.5.4 to clarify the impact of the degree of contrast 15
4 Conclusion ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 16 5 References ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...... 16
6 a vote of thanks ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .............. 18
步骤如下：
1、首先生成中文目录，以office2010为例，打开office2010，在菜单栏点击【引用】，第一个功能就是【目录】，点击出现下拉框，选择【自动目录1】，即可生成中文目录。
2、按【ctrl+Enter】键换页，再重复【第1步骤】，又生成一个中文目录。
3、把【目录】改成【Contents】,把其他标题用【百度翻译】翻译成因为即可，最后生成的【Contents】,即生成了英文目录。
扩展资料：
著名目录学家余嘉锡在《目录学发微》中，总结了目录学在考辨古籍上的六种作用：
一曰以目录著录之有无，断书之真伪；
二曰用目录书考古书篇目之分合；
三曰以目录书著录之部次，定古书之性质；
四曰因目录访求阙佚；
五曰以目录考亡佚之书；
六曰以目录书所裁姓名卷数，考古书之真伪。
余先生的上述论断，是深刻的。目录对于研究者来说，又是得力的助手和工作的指商。出于目录是图书的分类著录，因而利用目录有助于查阅有关图书资料， “即类求书，因书究学”；同时目录在分门别类之中，亦可展观文化学木的源流、派别，从而使人们可从中“辨章学术，考镜源流”，这对于研究工作，无疑是有着重要意义的。在研究、整理和运用历史文献的过程中，对于目录特别是史部目录必须认真加以学习和研究。
参考资料：百度百科：目录
