草地学报 ›› 2025, Vol. 33 ›› Issue (10): 3477-3484.DOI: 10.11733/j.issn.1007-0435.2025.10.035

• 技术研发 • 上一篇    

植物乳杆菌AS98对苜蓿青贮品质、微生物及叶绿醇含量的影响

穆园园1, 孔德慧1, 曹阳1,2,3, 臧延青4   

  1. 1. 黑龙江八一农垦大学动物科技学院/黑龙江省寒区饲料资源高效利用与营养调控重点实验室, 黑龙江 大庆 163319;
    2. 粮食副产物加工与利用教育部工程研究中心, 黑龙江 大庆 163319;
    3. 农业农村部东北平原农业绿色低碳重点实验室, 黑龙江 大庆 163319;
    4. 黑龙江八一农垦大学食品学院, 黑龙江 大庆 163319
  • 收稿日期:2025-01-20 修回日期:2025-03-02 发布日期:2025-10-17
  • 通讯作者: 曹阳,E-mail:hbdkcaoyang@163.com;臧延青,E-mail:byndzangyanqing@163.com
  • 作者简介:曹阳,E-mail:hbdkcaoyang@163.com;臧延青,E-mail:byndzangyanqing@163.com
  • 基金资助:
    国家自然科学基金项目(No.32171676);黑龙江省双一流特色学科平台项目(HLJ2022TSXK)资助

Effects of Lactiplantibacillus plantarum AS98 on Alfalfa Silage Quality, Microorganisms and Phytol Content

MU Yuan-yuan1, KONG De-hui1, CAO Yang1,2,3, ZANG Yan-qing4   

  1. 1. College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, Heilongjiang Province 163319, China;
    2. Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, Heilongjiang Province 163319, China;
    3. Key Laboratory of Green and Low-carbon Agriculture in the Northeastern China Plain, Ministry of Agriculture and Rural Affairs P. R. China, Daqing, Heilongjiang Province 163319, China;
    4. College of Food Science, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, China
  • Received:2025-01-20 Revised:2025-03-02 Published:2025-10-17

摘要: 为了研究前期从青贮中分离的植物乳杆菌(Lactiplantibacillus plantarum)AS98对苜蓿(Medicago sativa L.)青贮品质及叶绿醇含量的影响,试验采取单因素设计,处理包括对照组、AS98组(添加1×107 cfu·mL-1植物乳杆菌AS98菌株)、LP组(添加1×107 cfu·mL-1商品菌(Lacticaseibacillus paracasei, LP)和AS98+LP组(0.5×107 cfu·mL-1植物乳杆菌AS98和0.5×107 cfu·mL-1商品菌LP复合菌)。结果表明,与对照组比,添加组均改善了苜蓿青贮的感官品质,AS98组对减少中性洗涤纤维与酸性洗涤纤维含量以及提高粗蛋白、粗脂肪以及叶绿醇含量作用显著(P<0.05);所有添加组与对照组相比显著提高了乳酸含量(P<0.05),并且AS98组和AS98+LP组乳酸菌数量含量显著高于对照组(P<0.05),pH值和氨态氮含量显著低于对照组(P<0.05),好氧性细菌、芽孢杆菌、酵母菌数量显著降低(P<0.05)。综上所述,添加AS98可以改善紫花苜蓿青贮发酵品质,显著提高叶绿醇含量,本研究为AS98作为生产富集叶绿醇的苜蓿青贮添加剂提供了理论基础和功能菌株。

关键词: 苜蓿青贮, 乳酸菌, 微生物组成, 发酵品质, 叶绿醇

Abstract: To investigate the effects of AS98 (Lactiplantibacillus plantarum), which was isolated from silage in the earlier stage, on the quality and phytol content of alfalfa (Medicago sativa L.) silage, a single-factor experimental design was adopted. The treatments included the control group (CK), the AS98 group (1×107 cfu·mL-1 L. plantarum AS98 strain, L. plantarum), the LP group (1×107 cfu·mL-1 commercial bacterium Lacticaseibacillus paracasei, LP) and the AS98+LP group ((0.5 + 0.5)×107 cfu·mL-1 Lactiplantibacillus plantarum AS98 + commercial bacterium LP compound bacteria). The results showed that in comparison with the control group, all the additive-added groups enhanced the sensory quality of alfalfa silage. The AS98 group significantly reduced the contents of neutral detergent fiber and acid detergent fiber, and significantly increased the contents of crude protein, crude fat, and phytol (P<0.05). Compared to the control group, all additive-added groups significantly increased the lactic acid content (P<0.05). Additionally, the quantities of lactic acid bacteria in the AS98 group and the AS98+LP group were significantly higher than those in the control group (P<0.05), while the pH value and the content of ammonium-nitrogen were significantly lower than those in the control group (P<0.05), and the numbers of aerobic bacteria, bacillus, and yeast were significantly decreased (P<0.05), and the numbers of Aerobic BacteriaBacillus and Yeast decreased significantly (P<0.05). In conclusion, the addition of AS98 can improve the fermentation quality of alfalfa silage and significantly increase phytol content. This study provides a theoretical basis and functional strains for AS98 as an additive for the production of alfalfa silage enriched with phytol.

Key words: Alfalfa silage, Lactiplantibacillus, Microbial population, Fermentation quality, Phytol

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