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刍议国家标准GB8270-1999的修订 总被引:1,自引:0,他引:1
根据作者对近几年来国际上有关权威组织和机构对甜菊糖甙产品作为一种甜味剂批准使用和许可动态的研究,结合国家标准GB8270-1999《食品添加剂甜菊糖甙》的相关项目指标,提出了一些修订的意见。 相似文献
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一种适用于现阶段工业化生产的甜菊糖甙超滤新工艺,于1992年12月22日,在杭州市通过浙江省科委组织鉴定;该工艺采用国家海洋局杭州水处理中心研制的超薄型板式超滤器和截留分子量约1万的 CA 膜所组成的超滤装置,以杭州食品添加剂厂生产的甜菊糖甙溶液进行超滤,经二年多的实验结果表明,获得预期结果。 相似文献
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甜菊糖甙是从菊科植物——甜叶菊中提取和精制的一种新型高甜度、低热值、无毒的天然甜味剂,其甜度为蔗糖的200倍以上。镇江甜菊糖厂根据南开大学高分子化学研究所和商业部北京商业机械研究所研制成功的“树脂吸附法提取和精制甜菊糖甙”的小试成果,在江苏省丹徒县镇江甜菊糖厂进行了生产性试验。经四单位(南开大学高分子化学研究所,商业部北京商业机械研究所,南开大学化 相似文献
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《精细与专用化学品》2005,13(17):33-34
华润联手红梅合作投资10万t/a味精扩产项目,三江集团与八峰药化联手开发氨基酸产业,美国香料杀菌研究获新进展,哈尔滨天马公司甜菊糖甙生加工项目开工建设,希杰聊城赖氨酸工厂于6月初投产, 相似文献
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李建中 《精细与专用化学品》1986,(10)
温州市工业科学研究所承担的浙江省科技攻关项目“甜菊糖甙提取工艺中间试验”已由浙江省科委组织通过了技术鉴定,并已在浙南两个工厂投产成功。该工艺的特点是采用H复合盐预处理,阴阳离子交换组合净化,工艺技术路线简单可行,成品质量好,收率高,成本低,具有较好的经济效益,整个生产过程不使用有机溶剂,操作安全。成品经省市食品卫生监督 相似文献
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分别以盐酸或氨基磺酸为催化剂水解斯替夫苷(St),研究底物质量浓度、反应温度、催化剂用量和反应时间对斯替夫苷水解的影响,着重考察了斯替夫苷的转化率、甜菊醇的产率和异甜菊醇的产率。其中,盐酸催化水解斯替夫苷的最优工艺条件为:反应温度95℃,底物质量浓度400 g/L,盐酸浓度0.04 mol/L,反应时间28 h;在该条件下,根据高效液相色谱分析计算得到斯替夫苷转化率接近100%,甜菊醇产率达83.6%,异甜菊醇产率达12.4%。氨基磺酸催化反应的工艺条件为:反应温度95℃,斯替夫苷质量浓度400 g/L,氨基磺酸浓度0.05 mol/L,反应时间31 h;在该条件下,根据高效液相色谱分析计算得到斯替夫苷转化率接近100%,甜菊醇产率达81.5%,异甜菊醇产率达11.7%。 相似文献
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异斯特维醇是由天然产物甜菊糖苷经酸解得到,其衍生物在生物活性方面的应用研究较多。本文对异斯特维醇衍生物在生物活性、催化剂、分子识别和超分子组装等领域的应用进行了综述。 相似文献
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甜菊醇是天然产物甜菊糖苷的水解产物,分子具有对映-贝壳杉烯型骨架结构,具有抗高血压、降低血糖、抑制癌细胞等生理活性。本文对近年来有关甜菊醇的结构改造及其生物活性的研究进展作了初步的总结。 相似文献
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甜菊糖苷是一种天然甜味刑,在酸性条件下水解为异甜菊醇。异甜菊醇具有降血压、降血糖、抗炎和抗肿瘤等生理活性。本文对异甜菊醇及其衍生物在抗炎、抗肿瘤、手性催化和分子识别方面的应用研究进行了总结。 相似文献
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考察处方中组分对法莫替丁分散片制剂的影响。以崩解时限为指标,采用正交设计试验,对法莫替丁分散片处方进行筛选。处方组成为法莫替丁4%,预胶化淀粉76%,交联聚乙烯吡咯烷酮(PVPP)18%,硬脂酸镁1%,甜菊糖1%。所选处方合理,分散均匀性好。 相似文献
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The aim of this work was to optimize the glycoside composition of Stevia rebaudiana leaves using supercritical fluid extraction (SFE). A Box-Behnken statistical design was used to evaluate the effect of various values of pressure (150–350 bar), temperature (40–80 °C) and concentration of ethanol-water mixture (70:30) as co-solvent (0–20%) by CO2 flow rate of 15 g min−1 for 60 min. The most effective variables were co-solvent concentration (P < 0.005) and temperature (P ≤ 0.005). Evaluative criteria for both dependent variables (stevioside and rebaudioside A yields) in the model was assigned maximum. Optimum extraction conditions were elicited as 211 bar, 80 °C and 17.4% which yielded 36.66 mg/g stevioside and 17.79 mg/g rebaudioside A. Total glycosides composition were close to those obtained using conventional water extraction (64.49 mg/g) and a little higher than ethanol extraction (48.60 mg/g) demonstrating challenges for industrial scale application of SFE. 相似文献
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《分离科学与技术》2012,47(7):1014-1022
Hot water extraction process was used for the extraction of steviosides from dry stevia leaves. The independent variables were, leaf to water ratio (1:5 to 1:20), heating time (10 to 120 min), and temperature (30 to 90°C). The combined effects of these independent variables on the extracted stevioside concentration and color of the extract were studied. For optimizing the extraction process, central composite rotatable design in combination with response surface methodology was used. Significant regression models with coefficient of determination greater than 0.90 were established to study the effect of independent variables on the responses. The optimum conditions are: temperature of water: 78°C, time of heating: 56 min and leaf to water ratio: 1:14 (g:mL). 相似文献
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Francisca I.P. Oliveira Sueli Rodrigues Fabiano A.N. Fernandes 《Food and Bioproducts Processing》2012,90(4):713-718
The present study describes a new process denominated dual stage sugar substitution (D3S). This process aims to substitute high calorie sugars of Malay apples for a low calorie natural sweetener. In a first stage, high calorie sugars (sucrose, fructose and glucose) are partially removed from the fruit samples and in a second stage, low calorie sugars (stevioside and rebaudioside) are incorporated to the fruit to maintain its sweetness. The use of ultrasound was evaluated on both stages of the D3S process. Best performance of the process was obtained by subjecting the fruit samples to ultrasound in the sugar removal stage followed by immersion of the samples in Stevia-based solution with application of ultrasound in the sweetener incorporation stage. These operating conditions resulted in the highest sugar removal during the first stage, highest water loss during the process and highest sweetener incorporation during the second stage of the D3S process. 相似文献