Manure odor, which results in the increasing complaints and lawsuits, has increased the tension among swine producers and surrounding residents. The effects of Lactobacillus plantarum and different rates of soluble ca...Manure odor, which results in the increasing complaints and lawsuits, has increased the tension among swine producers and surrounding residents. The effects of Lactobacillus plantarum and different rates of soluble carbohydrates additions to swine manure on odorous compounds, chemical compounds and indigenous flora were evaluated. Additions were calculated on dried manure weight basis. Variables monitored included ammonia （NH3）, hydrogen sulfide （H2S）, odor offensiveness, pH, ammonium nitrogen（NH4^＋-N）, volatile fatty acids （VFAs）, urease and indigenous flora. The results indicated that the combination of L. plantarum and soluble carbohydrates dramatically reduced manure pH. Lower pH resulted in the reduction of NH3 volatilization （34.6%-92.4%, P〈0.01）, the increases of H2S （P〈 0.05） and NH4^＋-N （5.3%-17.5%, P〈0.05）. In addition, L. plantarum and soluble carbohydrates additions significantly reduced odor offensiveness, those VFAs related to malodor indicators（valeric acids, 12.3%-47.7%, P〈 0.05; iso-valeric, 3.5%-23.8%） and the main microorganisms responsible for odor production, with the number of Eubacteria in swine manure reducing by 4.9%, 11.6%, 17.4%, 34.1% and 32.2% respectively.展开更多
2型糖尿病(diabetes mellitus type 2, T2DM)作为一种慢性疾病,起病隐匿,三多一少是常见症状,目前发病机制尚不明确。若血糖控制欠佳,5~10年会诱发一系列其他疾病如语言障碍、血管病变、中风瘫痪等,严重损害患者健康,威胁生命。目前,通...2型糖尿病(diabetes mellitus type 2, T2DM)作为一种慢性疾病,起病隐匿,三多一少是常见症状,目前发病机制尚不明确。若血糖控制欠佳,5~10年会诱发一系列其他疾病如语言障碍、血管病变、中风瘫痪等,严重损害患者健康,威胁生命。目前,通过调节肠道菌群对该病进行治疗干预成为最新研究方向。中药作为我国传统用药,能有效降低血糖,缓解T2DM所带来的心绞痛等并发症。已有研究表明中药、中药复方及活性成分能通过影响肠道菌群菌种类、数量、相对丰富度、代谢途径等调节糖尿病炎症或刺激胰岛细胞,以达到治疗或舒缓T2DM症状的目的。本文通过查阅文献对中药影响肠道菌群治疗、干预T2DM的相关研究进行综述,并提出在肠道菌群研究方面的一些不足之处,期望能为中药更全面地发挥其治疗作用提供参考。展开更多
文摘Manure odor, which results in the increasing complaints and lawsuits, has increased the tension among swine producers and surrounding residents. The effects of Lactobacillus plantarum and different rates of soluble carbohydrates additions to swine manure on odorous compounds, chemical compounds and indigenous flora were evaluated. Additions were calculated on dried manure weight basis. Variables monitored included ammonia （NH3）, hydrogen sulfide （H2S）, odor offensiveness, pH, ammonium nitrogen（NH4^＋-N）, volatile fatty acids （VFAs）, urease and indigenous flora. The results indicated that the combination of L. plantarum and soluble carbohydrates dramatically reduced manure pH. Lower pH resulted in the reduction of NH3 volatilization （34.6%-92.4%, P〈0.01）, the increases of H2S （P〈 0.05） and NH4^＋-N （5.3%-17.5%, P〈0.05）. In addition, L. plantarum and soluble carbohydrates additions significantly reduced odor offensiveness, those VFAs related to malodor indicators（valeric acids, 12.3%-47.7%, P〈 0.05; iso-valeric, 3.5%-23.8%） and the main microorganisms responsible for odor production, with the number of Eubacteria in swine manure reducing by 4.9%, 11.6%, 17.4%, 34.1% and 32.2% respectively.
文摘2型糖尿病(diabetes mellitus type 2, T2DM)作为一种慢性疾病,起病隐匿,三多一少是常见症状,目前发病机制尚不明确。若血糖控制欠佳,5~10年会诱发一系列其他疾病如语言障碍、血管病变、中风瘫痪等,严重损害患者健康,威胁生命。目前,通过调节肠道菌群对该病进行治疗干预成为最新研究方向。中药作为我国传统用药,能有效降低血糖,缓解T2DM所带来的心绞痛等并发症。已有研究表明中药、中药复方及活性成分能通过影响肠道菌群菌种类、数量、相对丰富度、代谢途径等调节糖尿病炎症或刺激胰岛细胞,以达到治疗或舒缓T2DM症状的目的。本文通过查阅文献对中药影响肠道菌群治疗、干预T2DM的相关研究进行综述,并提出在肠道菌群研究方面的一些不足之处,期望能为中药更全面地发挥其治疗作用提供参考。
