1. Objective:To study the constituents of Citrus grandis peel.

2. In this paper, the production techniques of Citrus grandis marmalade was introduced, and the economic performance was studied.

3. Results: The content of total flavonoids in Citrus grandis (L. ) Osbeck of last year is a little more than the content of the year before last year.

4. The preliminary performance of Shatianyou (Citrus grandis Osbeck) on 4 types of trifoliate orange (Poncirus trifoliata Raf. )rootstock were recorded.

5. In recent years, an unknown disease has caused the pomelo (Citrus grandis) fruit seriously dropping in Ruili city of Dehong prefecture.

6. Separation and purification of bioactive component naringin from pomelo (Citrus grandis Osbeck) peel can improve the efficient use of pomelo resource.

7. Results indicated that Exocarpium Citrus Grandis from different habitats and sources exits certain difference between macro and trace elements, so we could identify quality goods in light of it.

8. Annual change of various elements was different, indicating that the demand amount of elements and the element proportions for Citrus grandis at different developmental stages were different.

9. Objective To establish the optimal extracted method for content determination of naringin in Citrus grandis.

10. Objective To compare the effects of ultrasonic and Soxhlet extraction methods for extracting naringin in Citrus grandis.

11. Methods RP-HPLC was used to determinate the content of naringin extracted with the above two methods from different year samples of Citrus grandis.

12. The soil nutrients, the contents and seasonal dynamics of mineral elements as well as the relationship among the elements in leaves of fruit-bearing trees of Citrus grandis Osbeck cv.

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13. GC/MS method was developed to compare lipophilic compounds of fruit and peel of Citrus grandis Tomentosa .

14. Finally, the economic benefit of the special-purpose fertilizer series for Citrus grandis is also discussed.

15. The function, application and extracting ways of essential oil and flavonoids in citrus grandis peel are introduced in the article.

16. China is one of the centre of origin, inheritance and variation of Citrus. The germplasm resources of pummelo( Citrus grandis Osbeck) contains abundant variations.

17. Technology of computer aided interpretation supplied a completely new method for quality evaluation of Exocarpium Citrus Grandis.

18. This paper studied on blocking nitrosamine synthesizing in the Western-style ham by adding the active extraction of citrus grandis peel.