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电解葡萄糖合成山梨醇及葡萄糖酸 被引量:11
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作者 鲁战光 鲁玉华 +2 位作者 杨晓燕 文丽荣 张积树 《青岛化工学院学报(自然科学版)》 2002年第2期43-47,共5页
分别对电解葡萄糖合成山梨醇、葡萄糖酸进行了研究。得到合成山梨醇最佳电解条件 :电流密度 0 .1 8A· dm- 2 ,温度 2 5℃ ,葡萄糖起始浓度 0 .1 0 6mol· L- 1,支持电解质的浓度 0 .1 5 mol· L- 1,在此条件下葡萄糖电流... 分别对电解葡萄糖合成山梨醇、葡萄糖酸进行了研究。得到合成山梨醇最佳电解条件 :电流密度 0 .1 8A· dm- 2 ,温度 2 5℃ ,葡萄糖起始浓度 0 .1 0 6mol· L- 1,支持电解质的浓度 0 .1 5 mol· L- 1,在此条件下葡萄糖电流效率达到 86.84% ;合成葡萄糖酸最佳电解条件 :电流密度 0 .1 8mol· L- 1,支持电解质的浓度 0 .2 mol· L- 1,葡萄糖浓度 0 .0 2mol· L- 1,温度 5 0℃ ,电流效率可达 76.5 0 %。 展开更多
关键词 电解 葡萄糖 山果醇 电合成 葡萄糖酸
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甲醇裂解—变压吸附联合制氢技术的应用 被引量:5
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作者 冯钰 《化工矿物与加工》 CAS 北大核心 2001年第12期13-14,共2页
根据国内制氢技术的发展趋势 。
关键词 制氢技术 山果醇 氢气 裂解 变压吸附
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Fructose-sorbitol ingestion provokes gastrointestinal symptoms in patients with eating disorders
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作者 Noel Friesen Ross D Hansen +1 位作者 Suzanne F Abraham John E Kellow 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第42期5295-5299,共5页
AIM:To evaluate gastrointestinal(GI) symptoms and breath hydrogen responses to oral fructose-sorbitol(F-S) and glucose challenges in eating disorder(ED) patients.METHODS:GI symptoms and hydrogen breath concentration w... AIM:To evaluate gastrointestinal(GI) symptoms and breath hydrogen responses to oral fructose-sorbitol(F-S) and glucose challenges in eating disorder(ED) patients.METHODS:GI symptoms and hydrogen breath concentration were monitored in 26 female ED inpatients for 3 h,following ingestion of 50 g glucose on one day,and 25 g fructose/5 g sorbitol on the next day,after an overnight fast on each occasion.Responses to F-S were compared to those of 20 asymptomatic healthy females.RESULTS:F-S provoked GI symptoms in 15 ED patients and one healthy control(P < 0.05 ED vs control) .Only one ED patient displayed symptom provocation to glucose(P < 0.01 vs F-S response) .A greater symptom response was observed in ED patients with a body mass index(BMI) ≤ 17.5 kg/m 2 compared to those with a BMI > 17.5 kg/m 2(P < 0.01) .There were no differences in psychological scores,prevalence of functional GI disorders or breath hydrogen responses between patients with and without an F-S response.CONCLUSION:F-S,but not glucose,provokes GI symptoms in ED patients,predominantly those with low BMI.These findings are important in the dietary management of ED patients. 展开更多
关键词 FRUCTOSE SORBITOL Malabsorption syndromes Functional gastrointestinal disorders Eating disorders UNDERWEIGHT
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The Effect of Processing Variables on Antioxidative Capacity of Mangosteen Peel (Garcinia mangostana L.) Extract
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作者 Prasong Siriwongwilaichat Wilaiwan Angnanon Nithiya Rattanapanone 《Journal of Agricultural Science and Technology(A)》 2012年第4期529-536,共8页
Mangosteen peel (Garcinia mangostana L.) is well known as an excellent source of antioxidative compounds. The objective of this study was to determine the most suitable processing condition for ethanolic extraction ... Mangosteen peel (Garcinia mangostana L.) is well known as an excellent source of antioxidative compounds. The objective of this study was to determine the most suitable processing condition for ethanolic extraction of mangosteen peel. The experimental factors included raw material prepared as fresh and dried forms, material-to-solvent ratio varying at 1:3, 1:4, 1:5, 1:6, 1:9 and 1:12, and contacting time at 1, 3, 6, 9, 12 and 16 hours. Antioxidative capacity of all extracts were evaluated and compared according to DPPH radical scarvenging assay, trolox equivalent antioxidant capacity (TEAC assay) and total phenolic compounds. It was found that the extract from dried mangosteen peel had significantly stronger antioxidative capacity than that from fresh mangosteen peel (P 〈 0.05). The suitable ethanolic extraction was found at the material-to-solvent ratio of 1:6 and 12 hours of contacting time. Mangosteen peel extracts prepared from fresh peel, dried peel, boiled and dried peel were also tested for oxidative rancidity reduction in lard at accelerated temperature of 60 ~C. The antioxidative rancidity was measured by acid value, totox value and thiobarbituric acid test. Commercial rosemary extract and BHT were compared at the equivalent concentration of 1,000 mg/kg. The results showed that the extract from dried mangosteen peel provided antioxidative capacity slightly stronger than fresh mangosteen peel extract, similar to rosemary extract but still poorer than BHT. 展开更多
关键词 Mangosteen peel solvent extraction XANTHONES natural antioxidant oxidative rancidity
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