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    • 1. 发明授权
    • Enzyme-mediated synthesis of esters and lactones
    • 酶介导的酯和内酯的合成
    • US4451565A
    • 1984-05-29
    • US350519
    • 1982-02-19
    • Ian GatfieldTheodor Sand
    • Ian GatfieldTheodor Sand
    • C12P7/40C12P7/42C12P7/62C12P17/02C12P17/04C12P17/00C12P7/00C12R1/785
    • C12P17/04C12P7/62Y10S435/931
    • In the enzyme-mediated synthesis of an ester or lactone from at least one carboxylic acid of the formulaR--CH.sub.2 --CH.sub.2 --COOHwhereinR is a hydrogen atom, or a hydrocarbon radical which has 1 to 21 carbon atoms and which can be optionally substituted by hydroxyl groups or alkoxy groups with 1 to 10 carbon atoms,with at least one primary or secondary alcohol having 1 to 15 carbon atoms, the improvement which comprises employing as the enzyme the esterase from Mucor miehei and effecting the synthesis in the absence of water. Advantageously, the synthesis is effected at about room temperature, the mol ratio of carboxylic acid to alcohol is from about 1:1 to 1:1.1, and the enzyme is used in a quantity of about 3 to 20% by weight of the carboxylic acid. The absence of water facilitates recovery, as by distillation.
    • 在酶介导的由至少一种式R-CH 2 -CH 2 -COOH的羧酸(其中R是氢原子)或具有1至21个碳原子的烃基的酯或内酯的合成中,其可以是任选的 由具有1-10个碳原子的羟基或烷氧基取代,至少一个具有1至15个碳原子的伯醇或仲醇,其改进包括使用来自Mucor miehei的酯酶并在不存在下进行合成 水。 有利地,合成在约室温下进行,羧酸与醇的摩尔比为约1:1至1:1.1,酶的用量为羧酸的约3-20重量% 。 没有水有助于回收,如通过蒸馏。
    • 3. 发明授权
    • Use of diacetyl dimer as an aromatic and/or flavouring substance
    • 使用二乙酰二聚体作为芳香和/或调味物质
    • US08287934B2
    • 2012-10-16
    • US12300820
    • 2007-05-07
    • Jakob LeyBerthold WeberGerhard KrammerIngo ReissHeinz-Jürgen BertramIan GatfieldPetra Hoffmann-Lücke
    • Jakob LeyBerthold WeberGerhard KrammerIngo ReissHeinz-Jürgen BertramIan GatfieldPetra Hoffmann-Lücke
    • A23L1/22A61K8/02
    • A23C9/1307A21D2/14A21D13/40A21D13/80A23C9/156A23D7/0056A23D7/015A23G3/36A23G4/06A23G9/32A23L19/00A23L27/206C12C5/026C12G1/00C12G3/06
    • The invention relates to the use of 5-acetyl-2,5-dimethyl-2-hydroxy-tetrahydrofuran-3-one (diacetyl dimer of formula (I)) in the form of one of its stereoisomers or in the form of a mixture consisting of or containing two, three or four of its stereoisomers (i) for imparting, intensifying and/or modifying a creamy and/or fatty sensation in the mouth, (ii) for imparting, intensifying and/or modifying a sweet, buttery, cream-like and/or creamy flavor; and/or (iii) as an aromatic and/or flavoring substance. The invention furthermore relates to a process (i) for imparting, intensifying and/or modifying a creamy and/or fatty sensation in the mouth, (ii) for imparting, intensifying and/or modifying a sweet, buttery, cream-like and/or creamy flavor, to corresponding aromatic compositions, to formulations selected from a nutrition formulation (foodstuff), an oral hygiene formulation, a luxury product formulation, a formulation for oral pharmaceutical use or a semi-finished good formulation for the preparation of nutrition formulations or luxury product formulations, as well as preparations comprising one or more of said compositions and/or formulations.
    • 本发明涉及其一种立体异构体形式的5-乙酰基-2,5-二甲基-2-羟基 - 四氢呋喃-3-酮(式(I)的二乙酰二聚体)或混合物形式的用途 包含或含有二,三或四种立体异构体(i)用于赋予,增强和/或改变口腔中的乳状和/或脂肪感觉,(ii)用于赋予,增强和/或改变甜味, 奶油状和/或奶油味; 和/或(iii)作为芳香和/或调味物质。 本发明还涉及一种用于赋予,增强和/或改变口腔中的乳状和/或脂肪感觉的方法(i),(ii)用于赋予,加强和/或改变甜味,奶油状和/ 或奶油味,与相应的芳香族组合物相对于选自营养制剂(食品),口腔卫生制剂,豪华产品制剂,用于口服药物用途的制剂或用于制备营养制剂的半成品良好制剂的制剂,或 豪华产品制剂,以及包含一种或多种所述组合物和/或制剂的制剂。
    • 5. 发明授权
    • Method of producing &ggr;-decalactone using Yarrowia lipolytica strain HR 145 (DSM 12397)
    • 使用解脂耶氏酵母菌株HR145(DSM12397)生产γ-癸内酯的方法
    • US06451565B1
    • 2002-09-17
    • US09830148
    • 2001-04-20
    • Jürgen RabenhorstIan Gatfield
    • Jürgen RabenhorstIan Gatfield
    • C12N100
    • C12P17/04C12P7/62Y10S435/911
    • A process is provided for producing &ggr;-decalactone using Yarrowia lipolytica HR 145 (DSM 12397). The process includes preparing the product in a bioreactor by culturing the pure strain of Yarrowia lipolytica in a culture medium containing carbon compounds, nitrogen compounds, inorganic salts, trace elements, vitamins, etc. Other ingredients of the culture medium include glycerol, glucose, mannitol, citric acid, malt extract, yeast extract, casein hydrolysate, castor oil, cotton seed meal or corn steep liquor. Also sulphates, nitrates, chlorides, carbonates or phosphates of metals sodium, potassium magnesium, manganese, calcium, zinc, and mixtures thereof can be used in the culture medium. Further, a pure strain of Yarrowia lipolytica HR 145 (DSM 12397) is provided.
    • 提供了使用解脂耶氏酵母HR 145(DSM 12397)产生γ-癸内酯的方法。 该方法包括在生物反应器中通过在含有碳化合物,氮化合物,无机盐,微量元素,维生素等的培养基中培养纯化的解脂耶氏酵母菌株来制备该产物。培养基的其它成分包括甘油,葡萄糖,甘露醇 ,柠檬酸,麦芽提取物,酵母提取物,酪蛋白水解物,蓖麻油,棉籽粉或玉米浆。 也可以在培养基中使用金属钠,钾镁,锰,钙,锌及其混合物的硫酸盐,硝酸盐,氯化物,碳酸盐或磷酸盐。 此外,提供了解脂耶氏酵母属HR 145(DSM 12397)的纯菌株。