阿拉伯糖

A new compound has been isolated from the Laurencia majuscule Lucas, it"s structure was determined by IR, MS,"HNMR, 13CNMR, clemently analysis.The compound is P -d-Arabinoside, 1-O-hexadecyl.

从采自西沙群岛的略大凹顶藻乙醇提取液的乙酸乙酯部分分离出了一个化合物，经IR、MS、~1HNMR、~(13)CNMR、元素分析等方法鉴定为一个新化合物：β-十六烷基-D-阿拉伯糖甙。

The size of bacteria,characteristic of stain,move about under light microscope and types of endospore were observed.

通过观察实验菌株的形态、染色特征、动力、芽孢的形态与位置，结合葡萄糖、阿拉伯糖、乳糖、肌醇发酵、卵磷脂试验、尿素水解试验、溶血性试验、青霉素抗性试验、溶菌酶抗性试验等，结果3种微生物被鉴定为蜡样芽孢杆菌、克柔念珠菌、枯草芽孢杆菌。

Nov.. The main symptoms of the bacterial disease on Vigna angularis were canker of stalk.The strains were straight or curved rods; polar flagellum one; Gram-negative; could infect Vigna angularis、 Glycine max、 Vigna radata、 Vigna umbellate、 Phaseolus vulgaris、 Pisum sativum、 Pisum sativum var.humlie; oxidase negative; nitrate reduction negative; 5% glucose agar mucilage positive; esculin hydrolysis positive; starch negative; milk hydrolysis positive; H_2S positive; acid from L-arabinose, D-mannose, D-galactose, cellobiose, trehalose and fructose; 5%NaCl positive; G+Cmol%-69%.

红小豆溃疡病主要症状为茎部溃疡；各菌株菌体均杆状；极生鞭毛1根；革兰氏染色阴性；人工接种能侵染多种豆科植物；好氧；氧化酶阴性；硝酸盐反应阴性；5％葡萄糖营养琼脂黏液生长阳性；七叶灵水解阳性；淀粉水解阴性；牛奶分解产碱；产生硫化氢；能从阿拉伯糖等产酸；最大耐盐量为5％；G+Cmol％为69％等特征，根据《手册》9th ed相关部分，确定该病由野油菜黄单胞菌苜蓿致病变种Xanthomonas campestris pv.alfalfae(Riker，Jones et Davis 1935)Dye 19781引起。

Effect of pH on the formation of volatile and semi-volatile substances in the maillard reaction systems of arabinose/cysteine was analyzed and compared by the method of headspace-solid microextraction associated with gas chromatography-mass spectrography.

利用顶空-固相微萃取-气质联用法，分析和比较不同pH条件对阿拉伯糖/半胱氨酸模型体系挥发性风味物质形成的影响。

4R,5S,6R-5,6-Bis-allyl-6-aldehyde-γ-hexanelactone I-145 was prepared from D-arabinose by six steps. Compound I-145 underwent Mukaiyama-type intramolecular aldolization to produce bicyclooctane I-147 stereospecifically.

我们以D-阿拉伯糖为起始原料，经六步反应，得到(4R，5S，6R)-5， 6-二烯丙氧基-6-醛基-γ-己酸内酯I-145，然后I-145发生分子内的Mukaiyama式aldol缩合反应，完全立体专一性地得到环化中间体I-147。

On the basis of spectral analysis, these compounds were identified as Kaempferol , Kaempferol-3-O-β-D-glucopyranoside , Kaempferol-3-O-β-D-galactopyranoside, Quercetin , Quercetin-3-O-β-D-arabinopyranoside, Quercetin-3-O-β-D-galactopyranoside, gallic acid, methyl gallate-4-O-β-D- galactopyranoside, caffeicacid, methyl caffeate, 4-cafeoyl-(3"a, 4"a, 5"β)- trihydroxyquinic acid, 3"-cafeoyl-(3"a, 4"P, 5"P )-trihydroxyquinic acid methyl ester, 5"-cafeoyl-galactonic acid , pumiloside, loganic acid , 5R,6S,7E-megastima-3-on-7-en-9-ol 9-O-β-D-glucopyranoside. 2a, 3β-dihydroxy-oleanoic acid , 2a, 3β, 23-trihydroxy-oleanoic acid, 3a, 6a-dihydroxy-oleanoic acid, 3β-hydroxy-ursoic acid, 2a, 3a, 23-trihydroxy-ursoic acid , 2a, 3β, 23-trihydroxy-ursoic acid, 2β, 3β, 19a -trihydroxy-ursoic acid, 2a , 3β, 19a -trihydroxy-ursoic acid-28-O-β-D-glucopyranoside , 2a. 3a, 19a-trihydroxy-ursoic acid-28-O-β-D-glucopyranoside, 2a, 3a, 19a, 23-tetrahydroxy-ursoic acid, 1a, 3a, 19a, 23-tetrahydroxy-ursoic acid-28-O-β-D-glucopyranoside , 3a, 19a, 23-trihydroxy-ursoic acid.

从珙桐中分离鉴定得到了28种化合物，它们分别是：山奈酚，3-O-β-D-吡喃葡萄糖基-山奈酚甙，3-O-β-D-吡喃半乳糖基-山奈酚甙，槲皮素，3-O-β-D-吡喃阿拉伯糖基-槲皮素甙，3-O-β-D-吡喃半乳糖基-槲皮素甙，没食子酸，4-O-β-D-吡喃半乳糖基-没食子酸甲酯，咖啡酸，咖啡酸甲酯，4-咖啡酰基-(3&α，4&α，5&β)-三羟基鸡纳酸，4-咖啡酰基-(3&α，4&β，5&β)-三羟基鸡纳酸甲酯，5'-咖啡酰基-半乳糖酸，pumiloside，loganic acid，5R，6S，7E-megastima-3-on-7-en-9-ol9-O-β-D-glucopyranoside，2α，3β-二羟基齐墩果酸，2α，3β，23-三羟基齐墩果酸，3α，6α-二羟基齐墩果酸，3β-羟基熊果酸，2α，3α，23-三羟基熊果酸，2α，3β，23-三羟基熊果酸，2β，3β，19α-三羟基熊果酸，2β，3β，19α-三羟基熊果酸-28-O-β-D-吡喃葡萄糖甙，2α，3α，19α-三羟基熊果酸-28-O-β-D-吡喃葡萄糖基甙，2α，3α，19α，23-四羟基熊果酸，2α，3α，19α，23-四羟基熊果酸-28-O-β-D-吡喃葡萄糖基甙，3α，19α，23-三羟基熊果酸。

Objective To research the function of hypoglycemic and antiobesity of L-Arabinose in New Zealand rabbit.

目的 探讨L-阿拉伯糖对动物降血糖和减肥的作用。

The binding behavior and kinetics of uncoupling protein with its ligand, the Fourier-transformation infrared spectra of uncoupling protein and its changes during ligand-binding process, the inhibition of Guanosine 5＇-Tetraphosphate (G-4-P) and Adenine-β-Darabinofuranoside 5＇-triphosphate on the binding of uncoupling protein with GTP were studied.

本文对解偶联蛋白与配基的结合及其结合动力学，解偶联蛋白及其与配基结合过程中的傅里叶变换红外光谱及其光谱变化，鸟嘌呤核苷四磷酸（G-4-P）和9-β-D-阿拉伯糖基呋喃5＇-三磷酸对解偶联蛋白与GTP结合的影响进行了研究。

The cell membrance of Espf7 was dialysed by 0.02% CHCl_3 the pre-inoculation time of 16~20h,the inoculum ratio at 2%,initial pH of 7.0,temperature of 30°C,arabinose 0.01%; glycerin 0.30%;Corn steep liquor 3%;NaCL 0.2%;KH_2PO_4 0.05%;MgSO_4 0.05%;MnCL_2 0.02%;CoCL_2 0.01%,the activity of DCase was increased from 1.12 u ?

基因工程菌Espf7在0.02％的氯仿用量下可以通透细胞膜，适宜接种龄为16～20h，接种量2％，初始pH值7.0，培养温度30℃，阿拉伯糖0.01％；甘油0.30％；玉米浆3％；NaCL 0.2％；KH_2PO_4 0.05％；MgSO_4 0.05％；MnCL_2 0.02％；CoCL_2 0.01％，使DCase活力由1.12u·mL~(-1)提高到2.1u·mL~(-1)，提高了87.5％。

The high temperature resistant L-arabinose isomerase which is provided by the invention has higher activity and stability under the higher temperature condition and has broad prospect and economic significance.

本发明提供的耐高温L-阿拉伯糖异构酶在较高温条件下具有较高的活性和稳定性，具有广泛的应用前景和经济意义。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失