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Background <p>This research aimed to investigate bioaccessibility of garlic oil extract (GOE) and riceberry rice bran oil extract (RBRBOE) and to enhance the stability and delivery of plant-derived essential oils. Two EOs were used to formulate through encapsulation techniques of microencapsulated black soldier fly (BSF) protein with a GOE matrix, (mBSF-GOE), and a nanoemulsified RBRBOE, (nRBRBOE). A completely randomized design was used for the treatments, with various ratios of feed additives between the mBSF-GOE and nRBRBOE supplementations at 0:0, 6:0, 4:2, 2:4, and 0:6&#xa0;mg in diet, with the R: C ratio at 60:40 using in vitro gas study.</p> Results <p>The combination of mBSF-GOE and nRBRBOE at 4:2&#xa0;mg for 12 and 24&#xa0;h after fermentation had a significant impact on several factors (<i>p</i> &lt; 0.01, &lt; 0.05), including gas kinetics, cumulative gas production (96&#xa0;h), in vitro dry matter degradability (IVDMD), and ruminal fermentation products. Specifically, the levels of propionate (C3) and total VFAs went up, while ruminal methane (CH<sub>4</sub>) production decreased by 48.2%. Subsequently, there was no negative effect (<i>p</i> &gt; 0.05) on the ruminal pH, ammonia nitrogen (NH<sub>3</sub>-N) concentration, or the dynamics of the rumen microbiota population, while significantly decreasing the methanogen population in terms of <i>Methanobacteriales</i> (up to 3.3% after 24&#xa0;h) (<i>p</i> &lt; 0.01).</p> Conclusions <p>Based on this study, it could be concluded that the supplementation of mBSF-GOE combined with nRBRBOE-based bioactive components could potentially be used as a ruminant feed enhancer to enhance fermentation efficiency and as technological feed additive substances to inhibit the methanogen population while mitigating CH<sub>4</sub> production.</p>

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Encapsulated phytogenic oils enhance in vitro rumen fermentation and reduce methane emissions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月17日

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  • Srisan Phupaboon,
  • Uswatun Muslykhah,
  • Chaichana Suriyapha,
  • Sukruthai Sommai,
  • Maharach Matra,
  • Gamonmas Dagaew,
  • Rittikeard Prachumchai,
  • Metha Wanapat

摘要

Background

This research aimed to investigate bioaccessibility of garlic oil extract (GOE) and riceberry rice bran oil extract (RBRBOE) and to enhance the stability and delivery of plant-derived essential oils. Two EOs were used to formulate through encapsulation techniques of microencapsulated black soldier fly (BSF) protein with a GOE matrix, (mBSF-GOE), and a nanoemulsified RBRBOE, (nRBRBOE). A completely randomized design was used for the treatments, with various ratios of feed additives between the mBSF-GOE and nRBRBOE supplementations at 0:0, 6:0, 4:2, 2:4, and 0:6 mg in diet, with the R: C ratio at 60:40 using in vitro gas study.

Results

The combination of mBSF-GOE and nRBRBOE at 4:2 mg for 12 and 24 h after fermentation had a significant impact on several factors (p < 0.01, < 0.05), including gas kinetics, cumulative gas production (96 h), in vitro dry matter degradability (IVDMD), and ruminal fermentation products. Specifically, the levels of propionate (C3) and total VFAs went up, while ruminal methane (CH4) production decreased by 48.2%. Subsequently, there was no negative effect (p > 0.05) on the ruminal pH, ammonia nitrogen (NH3-N) concentration, or the dynamics of the rumen microbiota population, while significantly decreasing the methanogen population in terms of Methanobacteriales (up to 3.3% after 24 h) (p < 0.01).

Conclusions

Based on this study, it could be concluded that the supplementation of mBSF-GOE combined with nRBRBOE-based bioactive components could potentially be used as a ruminant feed enhancer to enhance fermentation efficiency and as technological feed additive substances to inhibit the methanogen population while mitigating CH4 production.