整合生物学期刊网

应用天然产物 ›› 2021, Vol. 11 ›› Issue (3): 307-314.DOI: 10.1007/s13659-020-00289-3

• ORIGINAL ARTICLES • 上一篇    下一篇

Evaluation of Terpenes' Degradation Rates by Rumen Fluid of Adapted and Non-adapted Animals

I. Poulopoulou1, I. Hadjigeorgiou2   

  1. 1 Faculty of Science and Technology, Free University of Bolzano, Univeritätsplatz 5, 39100 Bozen-Bolzano, Italy;
    2 Department of Nutritional Physiology and Feeding, Faculty of Animal Science and Aquaculture, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece
  • 收稿日期:2020-10-12 修回日期:2020-11-13 出版日期:2021-06-24 发布日期:2021-06-04
  • 通讯作者: I. Poulopoulou

Evaluation of Terpenes' Degradation Rates by Rumen Fluid of Adapted and Non-adapted Animals

I. Poulopoulou1, I. Hadjigeorgiou2   

  1. 1 Faculty of Science and Technology, Free University of Bolzano, Univeritätsplatz 5, 39100 Bozen-Bolzano, Italy;
    2 Department of Nutritional Physiology and Feeding, Faculty of Animal Science and Aquaculture, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece
  • Received:2020-10-12 Revised:2020-11-13 Online:2021-06-24 Published:2021-06-04
  • Contact: I. Poulopoulou

摘要: The aim of the present study was to evaluate terpenes degradation rate in the rumen fluid from adapted and non-adapted animals. Four castrated healthy animals, two rams and two bucks, were used. Animals were daily orally dosed for 2 weeks with 1 g of each of the following terpenes, α-pinene, limonene and β-caryophyllene. At the end of each week, rumen fluid (RF) samples were assayed in vitro for their potential to degrade terpenes over time. For each animal, a 10 mL reaction medium (RM) at a ratio 1:9 (v/v) was prepared and a terpenes solution at a concentration of 100 μg/ml each, was added in each RM tube. Tubes were incubated at 39℃ under anaerobic conditions and their contents sampled at 0, 2, 4, 8, 21 and 24 h. RF could degrade terpenes as it was shown by the significantly (P < 0.05) higher overall degradation rates. Individual terpene degradation rates, were significantly (P < 0.05) higher in week 5 for limonene and marginally (P=0.083) higher also in week 5 for α-pinene. In conclusion, the findings of the present preliminary study suggest that terpenes can be degraded in the rumen fluid.

关键词: Terpenes, Degradation, Rumen, Sheep, Goats

Abstract: The aim of the present study was to evaluate terpenes degradation rate in the rumen fluid from adapted and non-adapted animals. Four castrated healthy animals, two rams and two bucks, were used. Animals were daily orally dosed for 2 weeks with 1 g of each of the following terpenes, α-pinene, limonene and β-caryophyllene. At the end of each week, rumen fluid (RF) samples were assayed in vitro for their potential to degrade terpenes over time. For each animal, a 10 mL reaction medium (RM) at a ratio 1:9 (v/v) was prepared and a terpenes solution at a concentration of 100 μg/ml each, was added in each RM tube. Tubes were incubated at 39℃ under anaerobic conditions and their contents sampled at 0, 2, 4, 8, 21 and 24 h. RF could degrade terpenes as it was shown by the significantly (P < 0.05) higher overall degradation rates. Individual terpene degradation rates, were significantly (P < 0.05) higher in week 5 for limonene and marginally (P=0.083) higher also in week 5 for α-pinene. In conclusion, the findings of the present preliminary study suggest that terpenes can be degraded in the rumen fluid.

Key words: Terpenes, Degradation, Rumen, Sheep, Goats