通便功能芦荟胶囊的研制

目的研制有通便功能的芦荟胶囊,建立产品质量标准。方法通过研究制剂成型性优化筛选富莱欣牌芦荟胶囊配方,设计生产工艺,评价产品稳定性、安全性以及通便功能。结果确定芦荟胶囊所用芦荟冻干粉每天最佳用量折合芦荟(以干品计)约1.5 g/d,确定大豆膳食纤维最佳用量区间为90～100 mg/d,玉米淀粉最佳用量区间为1200～1400 mg/d,二氧化硅最佳添加量为3.8～4.1 mg/d。连续3批产品质量稳定,功效成分及理化指标在3个月(38±1)℃和相对湿度75%的环境中有很好的稳定性。未见明显毒副作用、排便状况和粪便性状明显改善(P0.05)。结论该胶囊生产工艺可行,证明具有明显的通便功能,且各项质量指标稳定性良好。     

通便功能芦荟胶囊的研制

目的研制有通便功能的芦荟胶囊,建立产品质量标准。方法通过研究制剂成型性优化筛选富莱欣牌芦荟胶囊配方,设计生产工艺,评价产品稳定性、安全性以及通便功能。结果确定芦荟胶囊所用芦荟冻干粉每天最佳用量折合芦荟（以干品计）约1．5g／d,确定大豆膳食纤维最佳用量区间为90～100mg／d,玉米淀粉最佳用量区间为1200-1400mg／d,二氧化硅最佳添加量为3．8～4．1mg／d。连续3批产品质量稳定,功效成分及理化指标在3个月（38±1）℃和相对湿度75％的环境中有很好的稳定性。未见明显毒副作用、排便状况和粪便性状明显改善（P〈0．05）。结论该胶囊生产工艺可行,证明具有明显的通便功能,且各项质量指标稳定性良好。     

通便功能芦荟胶囊的研制

目的 研制有通便功能的芦荟胶囊,建立产品质量标准.方法 通过研究制剂成型性优化筛选富莱欣牌芦荟胶囊配方,设计生产工艺,评价产品稳定性、安全性以及通便功能.结果 确定芦荟胶囊所用芦荟冻干粉每天最佳用量折合芦荟(以干品计)约1.5 g/d,确定大豆膳食纤维最佳用量区间为90～100 mg/d,玉米淀粉最佳用量区间为1200～1400 mg/d,二氧化硅最佳添加量为3.8～4.1 mg/d.连续3批产品质量稳定,功效成分及理化指标在3个月(38±1)℃和相对湿度75％的环境中有很好的稳定性.未见明显毒副作用、排便状况和粪便性状明显改善(P＜0.05).结论 该胶囊生产工艺可行,证明具有明显的通便功能,且各项质量指标稳定性良好.     

芦荟通便作用的研究进展

芦荟是一种集药用、食用、美容和观赏于一体的重要经济植物,以其独特的功效和广泛的用途受到国内外的重视。研究芦荟的文献也较多,现将近年芦荟通便作用的研究进展作一综述。     

阿芦宝C片润肠通便作用动物研究

为研究阿芦宝Ｃ片的润肠通便作用,进行了动物研究。结果表明与阴性对照组相比,阿芦宝Ｃ片剂量为０．９、１．８ｇ／ｋｇＢＷ时,对小鼠小肠蠕动有显促进作用（Ｐ〈０．０５）,并能显缩小鼠排便时间和增加粪便中的水分含量（Ｐ〈０．０５）;其剂量为１．８ｇ／ｋｇＢＷ时,能显增加小鼠排便粒数及粪便干、湿重（Ｐ〈０．０５）;阿芦宝Ｃ片０．２、０．４、０．８ｍｇ／ｍＬ３个浓度剂量能显地增强家兔十二指肠和空肠自发     

芦荟制品中芦荟苷含量测定及通便作用研究

目的 测定不同工艺生产的芦荟制品中芦荟苷的含量,观察芦荟制品对便秘小鼠排便功能的影响.方法 采用高效液相色谱法测定芦荟制品中芦荟苷的含量.采用复方地芬诺(10 mg/kg.bw)造模小鼠,灌胃给予6种芦荟制品(1.0 g/kg),观察各组首次排黑便时问、5小时粪便粒数、粪便性状、粪便干湿重.结果 (1)库拉索芦荟全叶干粉、精制干粉、全叶冻干粉、全叶喷干粉、纯化药用级干粉及市售复方芦荟胶囊六种芦荟制品的芦荟苷含量依次为0.088%、0.266%、0.908%、6.71%、13.97%和3.41%.(2)芦荟精制干粉、芦荟纯化药用级干粉能够缩短便秘小鼠的首便时间,增加其所排粪便的粒数和重量;芦荟全叶冻干粉能够缩短便秘小鼠的首便时间,增加其所排粪便重量;芦荟全叶喷干粉能够增加排出粪便的重量;芦荟全叶干粉未见明显通便作用;6种芦荟制品均不影响小鼠体重增长.结论 芦荟制品可以缓解复方地芬诺酯所致便秘,其机制可能是促进肠蠕动,加快粪便排出,发挥润肠通便作用.     

低聚半乳糖润肠通便功能的研究

目的:研究低聚半乳糖的润肠通便作用。方法:依据《保健食品检验与评价技术规范-2003版》“通便作用检验方法”,将动物随机分为模型对照组、阴性对照组、低、中、高剂量组5组,经口给予不同剂量的低聚半乳糖10天后,测定小肠墨汁推进率及首次排黑便时间,6h排便粒数和排便总重量。结果:在便秘模型成立的条件下:三个剂量组与模型对照组相比,动物墨汁推进率、6h排便粒数、6h排便总重量高于模型对照组,首次排黑便时间低于模型对照组,差异均有非常显著性(P<0·01)。动物实验表明低聚半乳糖具有通便功能。     

芦荟多糖联合低聚果糖缓解小鼠酒精性肝损伤

本文研究了芦荟多糖联合低聚果糖对慢性酒精所致小鼠肝损伤的保护作用。采用芦荟多糖联合低聚果糖灌胃,以保护慢性酒精性肝损伤小鼠,实验结束后测定小鼠肝脏指数;血清生化指标,如谷丙转氨酶(ALT)、谷草转氨酶(AST)、总胆固醇(TC)和甘油三酯(TG);肝脏生化指标,如还原型谷胱甘肽(GSH)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、肿瘤坏死因子(TNF-α)和白介素-6(IL-6),同时观察组织病理学变化,以综合评价芦荟多糖联合低聚果糖对小鼠的肝保护作用。结果表明,高剂量组芦荟多糖联合低聚果糖能显著地降低酒精诱导的ALT、AST、TC、TG的水平至(23.37±0.80) U/L、(106.50±4.58) U/L、(2.85±0.10) mmol/L、(1.38±0.12) mmol/L;降低炎症因子IL-6和TNF-α水平至(28.24±0.45)和(155.90±9.67) pg/(mg pro)和提升丙二醇MDA含量至(1.25±0.13)pmol/(mgpro)(p0.05),并且提高肝内抗氧化酶GSH、SOD、GSH-Px活性至(93.65±4.93)、(61.24±3.13)和(82.75±7.04)U/(mgpro)(p0.05),高剂量组的肝保护效果较阳性药物水飞蓟更明显,其主要保护机制为抗氧化。因此,本研究为缓解酒精性肝损伤的芦荟多糖联合低聚果糖复方产品提供了一定的理论支撑。     

复合代糖的通便功效及其对肠道菌群的调节作用

本研究通过小鼠实验和菌群体外增殖实验探究复合代糖的通便功效及其对肠道菌群的调节作用.将Balb/c小鼠分为空白对照组、模型组、阳性对照组和复合代糖干预G1组(0.75 g/kg·BW)、G2组(1.5 g/kg·BW)、G3组(2.25 g/kg·BW)、G4组(3 g/kg·BW)、G5组(3.75 g/kg·BW)...     

复方海带代餐粉润肠通便作用研究

目的 对富含膳食纤维和不饱和脂肪酸的复方海带代餐粉进行润肠通便作用研究。方法 采用盐酸洛哌丁胺构建便秘小鼠模型,将100只昆明种雄性小鼠随机分为两大组,分别进行小肠运动实验和排便实验,每组再分别随机分为空白对照组、模型对照组和复方海带粉高、中、低剂量组：6.58 g/kg、3.29 g/kg、1.65 g/kg（分别相当于人体推荐量的10倍、5倍、2.5倍）,干预14 d后,通过检测小鼠小肠墨汁推进率、首粒排黑便时间、6 h内排便粒数和重量,并计算粪便含水量,分析其对小鼠润肠通便功能的影响。结果 在便秘模型构建成功的基础上,中、高剂量的复方海带粉能极显著提高便秘小鼠的小肠墨汁推进率,缩短首粒排黑便时间、增加6 h内排便粒数和质量,提高粪便含水量（P < 0.01）,以高剂量效果最佳。结论 该复方海带代餐粉能促进便秘小鼠的小肠运动,改善便秘,具有良好的润肠通便作用。     

库拉索芦荟多糖超声辅助提取工艺的研究

目的:研究超声波辅助提取库拉索芦荟多糖的最佳工艺.方法:通过正交试验研究库拉索芦荟多糖的水浴提取工艺;通过单因素试验及正交试验研究超声波辅助提取库拉索芦荟多糖的提取工艺.结果:水浴提取库拉索芦荟多糖的最佳方法是:料液比1:6、水浴时间60mim、水浴温度65℃、浸提液的pH值为9.0.超声波辅助提取库拉索芦荟多糖的最佳试验方案为:料液比1:4、超声功率100W、超声时间为6min、浸提液的pH值为9.0.结论:得到了超声波辅助提取库拉索芦荟多糖的提取工艺,超声波辅助提取法显著优于水浴提取法.     

Viscoelastic behavior of reconstituted Aloe vera hydrogels as a function of concentration and temperature

Viscoelastic properties for reconstituted A. vera hydrogels were evaluated in different ranges of concentration (0.2–1.6%, w/v) and temperature (30–60°C). The storage (G′) and loss (G″) moduli were well described by power function of the frequency (R² > 0.92). The combined effect of concentration and temperature was optimized for reconstituted gel formation, targeting maximum viscoelastic moduli (G₀′ and G′′₀) and minimum slope (n′ and n″) values using response surface methodology. The optimum condition selected was 1.6%, w/v at 30°C having higher gel strength [G′₀ (47.8 Pa.s^n′) and G″₀ (27.4 Pa.s^n′)], as well as minimum slope values [n′ (0.24) and n″ (0.08)]. Further, the effect of initial aging time on the viscoelastic moduli of optimized sample (1.6%, w/v at 30 ± 1°C) was noticed by fitting the intermediate creep ringing data to rheological models. The viscoelastic moduli (G′_J and G′_K) increased with aging time (0–180 min) for optimized A. vera hydrogel, as confirmed by Jeffrey’s and Kelvin-Voigt models. The obtained results suggested that optimized conditions for reconstituted A. vera gel formation could be useful to improve the gel strength which could be useful for various food applications.     

Anti‐sickling potential of Aloe vera extract

The effect of Aloe vera extract on the gelling time of human HbSS erythrocytes was investigated. The results showed that A. vera extract increased the gelling time of HbSS blood and inhibited sickling in vitro. In addition, a linear relationship was found between extract concentration and gelling time, suggesting that A. vera extract may have great potential in the management of sickle cell disease. Copyright © 2008 Society of Chemical Industry     

Quality Change of Apple Slices Coated with Aloe vera Gel during Storage

Fresh‐cut apples are easily susceptible to browning and microbial spoilage. In this study, an edible coating prepared from Aloe vera gel containing antibrowning solution was applied to preserve the quality of fresh‐cut apples during storage. Fresh‐cut apples were treated with both an Aloe vera gel and an Aloe vera gel containing 0.5% cysteine and then stored at 4 °C for 16 d. The color, firmness, weight loss, soluble solid content, titratable acidity, microbial analysis, and sensory evaluation were analyzed during storage. Fresh‐cut apples coated with the Aloe vera gel showed delayed browning and reduced weight loss and softening compared to the control. The Aloe vera gel coating was also effective in reducing the populations of the total aerobic bacteria and yeast and molds. In particular, Aloe vera gel containing 0.5% cysteine was most effective in delaying browning and the reduction of microbial populations among the treatments. These results suggest that an Aloe vera gel coating can be used for maintaining the quality of fresh‐cut apples.     

果胶酶对芦荟汁的澄清作用及性质的影响

为提高芦荟汁的澄清度,以果胶酶为澄清剂,透光率为评价指标,研究了酶解时间、酶解温度及加酶量对芦荟汁澄清效果的影响,通过单因素试验及正交试验得到最佳工艺条件是：果胶酶添加量0.1 μL/g,酶解时间120 min,酶解温度45 ℃,在此最佳条件下,芦荟汁的透光率为91.1%。酶解后的芦荟汁在感官品质方面,颜色变浅、涩味变淡、悬浮物减少、澄清度提高;在理化性质方面,pH值稍有下降、透光率提高了31.2个百分点,还原糖及可溶性固形物含量均提高至原来的2.0倍左右,芦荟多糖含量显著下降。     

Hot-air drying characteristics of Aloe vera (Aloe barbadensis Miller) and influence of temperature on kinetic parameters

The aim of this research was to study and model the kinetics of the hot-air drying of Aloe vera (Aloe barbadensis Miller) and to evaluate the influence of temperature on the kinetic parameters for the proposed models. A convective dryer was used at 50, 60, 70, 80 and 90 °C with an air flow of 2.0±0.2 m/s. The sorption isotherm of the fresh product was mathematically described by the Guggenheim, Anderson and de Boer (GAB) model, giving as a result monolayer moisture of 0.20 g water/g d.b. The mathematical models evaluated in the kinetic research included five empirical equations (Newton, Henderson-Pabis, Page, modified Page and Fick's diffusional model). The fit quality of the proposed models was evaluated by using the linear regression coefficient (r²), sum square error (SSE), root mean square error (RMSE) and Chi-square statistic (χ²). The diffusivity coefficient increased with the temperature from 5.30 to 17.73×10⁻¹⁰ m²/s, for a range of temperatures between 50 and 90 °C, with an estimated activation energy of 30.37 kJ/mol. When comparing the experimental moisture values with those estimated by the proposed models, the modified Page model provided the best to fit of the data, showing that this equation correctly simulates the Aloe vera drying process and represents an excellent tool for estimating its drying time.