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STUDIES ON THE YIELD AND CHEMICAL COMPOSITIONS OF OLEORESIN FROM PINUS ELLIOTTII ENGELM. IN DIFFERENT TAPPING SEASONS

Caf Nanjing

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Abstract

Variations in chemical compositions of oleoresin from Pinus elliottii Engelm. in different tapping seasons were studied. The results show that the turpentine from P. elliottii Engelm. contains a rather great percentage of β-pinene (in average 33. 63%). The content of turpentine in gum, as well as the contents of α-pinene,β-pinene and the ratio of a-pinene/β-pinene in turpentine is closely related to the season of oleo-resin production. The correlation coefficient of them are 0. 79,- 0. 49, 0. 62,-0. 56 respectively. The increase of turpentine content in gum is mainly due to the increase of β-pinene but not related with the α-pinene content. The β-pinene content grows up along with the progressing of the season of oleoresin production.

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What this paper is about

Variations in chemical compositions of oleoresin from Pinus elliottii Engelm. in different tapping seasons were studied. The results show that the turpentine from P. elliottii Engelm. contains a rather great percentage of β-pinene (in average 33. 63%). The content of turpentine in gum, as well as the contents of α-pinene,β-pinene and the ratio of a-pinene/β-pinene in turpentine is closely related to the season of oleo-resin production. The correlation coefficient of them are 0. 79,- 0. 49, 0. 62,-0. 56 respectively. The increase of turpentine content in gum is mainly due to the increase of β-pinene but not related with the α-pinene content. The β-pinene content grows up along with the progressing of the season of oleoresin production.

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Available abstract

Variations in chemical compositions of oleoresin from Pinus elliottii Engelm. in different tapping seasons were studied. The results show that the turpentine from P. elliottii Engelm. contains a rather great percentage of β-pinene (in average 33. 63%). The content of turpentine in gum, as well as the contents of α-pinene,β-pinene and the ratio of a-pinene/β-pinene in turpentine is closely related to the season of oleo-resin production. The correlation coefficient of them are 0. 79,- 0. 49, 0. 62,-0. 56 respectively. The increase of turpentine content in gum is mainly due to the increase of β-pinene but not related with the α-pinene content. The β-pinene content grows up along with the progressing of the season of oleoresin production.

Key concepts: Turpentine, Oleoresin, Pinene, Chemistry, Pinus <genus>, Tapping, Botany, Horticulture

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STUDIES ON THE YIELD AND CHEMICAL COMPOSITIONS OF OLEORESIN FROM PINUS ELLIOTTII ENGELM. IN DIFFERENT TAPPING SEASONS — Research Paper | ScholarLens