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    • 3. 发明申请
    • USE OF HOP ACIDS IN FUEL ETHANOL PRODUCTION
    • 在燃料乙醇生产中使用HOP酸
    • WO2004072291A3
    • 2005-11-10
    • PCT/US2004003684
    • 2004-02-09
    • HAAS INC JOHN IMAYE JOHN PAUL
    • MAYE JOHN PAUL
    • A23L3/00A23L3/3508C12C3/08C12C3/12C12C11/02C12H1/00C12P20060101C12P7/06C13B10/00
    • C13B10/006A23L3/3508C12H1/003C12P7/06Y02E50/17
    • Six hop acids are common to hops and beer: alpha acid, beta acids, isoalpha acids, rho-isoalpha acids, tetrahydro-isoalpha acids, and hexahydro-isoalpha acids. The six hop acids were tested to determine which were the most effective in inhibiting the growth of bacteria common to fuel ethanol production. The bacteria used in the tests were Lactobacillus brevis and Lactobacillus fermentum. The minimum inhibitory concentrations (MIC) of the hop acids were determined using MRS-broth. Molasses mash and wheat mashes were used as the growth media for the fermentations. In all cases the hop acids controlled the growth of these two lactobacillus bacteria with tetrahydroisoalpha acid, hexahydroisoalpha acid, and isoalpha acid killing the most bacteria at the lowest MIC. Treating yeast propagators, steep tanks, and fermenters with a minimum inhibitory concentration of hop acids will stop bacteria growth, increase ethanol yields and avoid the need for antibiotics.
    • 啤酒花和啤酒中的六跳酸是常见的:α酸,β酸,异亮氨酸,rho-isoalpha酸,四氢异丙酸和六氢异壬酸。 测试六滴酸,以确定哪些是抑制燃料乙醇生产中常见的细菌生长最有效的。 试验中使用的细菌是短乳杆菌(Lactobacillus brevis)和发酵乳杆菌(Lactobacillus fermentum)。 使用MRS-肉汤测定啤酒花酸的最小抑制浓度(MIC)。 糖浆和麦芽糖被用作发酵的生长培养基。 在所有情况下,啤酒花酸控制这两种乳杆菌细菌的生长,其中四氢异二酸,六氢异
      羟酸和异葎草酸以最低的MIC杀死最多的细菌。 处理具有最小抑制浓度的啤酒花的酵母繁殖者,陡峭的罐和发酵罐将阻止细菌生长,增加乙醇产量并避免需要抗生素。
    • 6. 发明申请
    • PROCESS FOR CONTROLLING MICRO-ORGANISMS IN AN AQUEOUS PROCESS MEDIUM
    • 用于控制水质过程介质中微量有机物的方法
    • WO00052212A1
    • 2000-09-08
    • PCT/US2000/005624
    • 2000-03-06
    • A23L3/3508C12C11/02C12H1/00C13B10/00C13D1/00
    • C13B10/006A23L3/3508C12H1/003
    • The invention relates to an improved process for controlling micro-organisms in an aqueous process medium comprising adding a hop acid, characterized in, that the hop acid is dissolved in an aqueous alkaline medium and added to the process medium, wherein the pH of the added, solution is higher than the pH of the process medium and the hop acid passes from the salt form into the free acid form within the process medium. In another embodiment, the invention relates to an improved process for controlling the bacterial growth in a distillery, the improvement comprising adding to the yeast or fermentor feed streams of the distillery an effective antibacterial amount of an isomerized hop acid.
    • 本发明涉及用于控制含水工艺介质中的微生物的改进方法,其包括加入啤酒花酸,其特征在于将所述啤酒花酸溶解在碱性水溶液中并加入到所述工艺介质中,其中加入的pH ,溶液高于加工介质的pH,并且啤酒酸从盐形式进入处理介质中的游离酸形式。 在另一个实施方案中,本发明涉及用于控制酿酒厂细菌生长的改进方法,其改进包括向酿酒厂的酵母或发酵罐进料流中加入有效抗菌量的异构化的hop酸。