Efficacy of Yiqi Fumai (Freeze-Dried Powder) on Ischemic Diastolic Heart Failure

Objective: To evaluate the efficacy of Yiqi Fumai freeze-dry powder (YFP) on ischemic diastolic heart failure. Methods: 100 patients diagnosed with unstable angina accompanying ischemic diastolic heart failure (IDHF) were selected randomly. 52 patients with TCM syndrome of qi-yin deficiency were divided into Chinese and Western combination therapy group. 48 patients have no TCM syndrome of qi-yin deficiency, and were treated with standard western medicine. After treatment, Seattle Angina Questionnaire Evaluation, ECG, conventional and stress echocardiography (SE) index, NT-proBNP were compared between before and after treatment. Results: The differences of PL, TS, DP between before and after treatment by YFP were statistically significant

Component Analysis of Shuanghuanglian Freeze-dried Powder and Its Effects on Human Hepatocyte Function when Combined with Cefradine

[Objectives]To detect the contents of components in Shuanghuanglian freeze-dried powder and to explore the effects of Shuanghuanglian freeze-dried powder and its components on human hepatocytes(HL-7702)alone or in combination with cefradine.[Methods]High performance liquid chromatography(HPLC)was used to detect the contents of baicalin,wogonin,chlorogenic acid and forsythin,the main components of Shuanghuanglian freeze-dried powder.HL-7702 cells were cultured with Shuanghuanglian freeze-dried powder and the main components of Shuanghuanglian freeze-dried powder alone or in combination with cefradine.Enzyme linked immunosorbent assay(ELISA)was used to detect the contents of alanine aminotransferase(ALT)and aspartate aminotransferase(AST)in the cell supernatant after culture,and HPLC was used to detect the expression level of adenosine diphosphate(ADP)and adenosine triphosphate(ATP);agarose gel electrophoresis was used to detect the expression of cyclooxygenase 2(COX-2)and heme oxygenase-1(HO-1)in HL-7702 cells.[Results]In Shuanghuanglian freeze-dried powder for injection,the content of baicalin was the highest,and the content of wogonin was the lowest.Compared with the control group,the expressions of AST and ALT in human hepatocytes(HL-7702)in high-dose baicalin group,forsythin group and wogonin group decreased(P<0.05,P<0.01),while the expression of ALT in chlorogenic acid+cefradine group(0.046 mg/mL)and forsythin+cefradine group(0.046 mg/mL)increased(P<0.05,P<0.01),and the expression of AST had no significant difference(P>0.05);the results in the low-dose group were similar to those in the high-dose group.Compared with the control group,ATP expression in chlorogenic acid group,chlorogenic acid+cefradine group(0.046 mg/mL)and forsythin+cefradine group(0.046 mg/mL)in the high-dose group decreased(P<0.05,P<0.01),and ADP expression was not significantly different(P>0.05);in the low-dose group,the expression of ATP and ADP increased in baicalin group(P<0.05),but decreased in wogonin group,baicalin+cefradine group(0.046 mg/mL)and wogonin group+cefradine group(0.046 mg/mL)(P<0.05,P<0.01).Compared with the control group,the expressions of COX-2 and HO-1 in HL-7702 cells in the cefradine group showed no significant difference(P>0.05).The expression of HO-1 and COX-2 in the different dose groups of Shuanghuanglian and the group combined with cefradine increased,and the difference was significant(P<0.05,P<0.01).[Conclusions]The components of Shuanghuanglian freeze-dried powder for injection had effects on hepatocytes,of which baicalin had a significant effect,and the effect of cefradine on hepatocytes was increased when used in combination with cefradine.

Preparation technology of ultra-fine powders of Auricularia auricular

Conventional mechanical method and mechanical method combined with vacuum freeze-drying technology were used to make the ultra-fine powders of edible fungus (Auricularia auricular). The content of basic nutrients, amino acid, micro structure and their properties of raw edible fungus and the edible fungus powders obtained with the two methods were analyzed and compared. The granularity size and micro-structure of the pulverized samples were analyzed by SEM and TEM technology. The average granularity size of the edible fungus powder obtained with mechanical method was 1–5 μm, while that obtained with mechanical method combined with vacuum freeze-drying process was 0.5–1 μm. The ultra-fine powders of edible fungus obtained with the two methods had better water recovery capability and quality, and their preserving time was longer than that of raw edible fungus. All the properties of the ultra-fine powders of edible fungus obtained with the vacuum freeze-drying technology were evidently superior to that of the conventional mechanical method. Keywords Auricularia auricula - Edible fungus - Ultra-fine powders - Vacuum freeze-drying CLC number TS205 Document code B Biography: YANG Chun-yu (1975), female, Ph. D. in Engineering Technology Center of Forestry and Wood Workine, Machinery, Northeast Forestry University, Harbin 150040, P. R. China.Responsible editor: Zhu Hong

Technological Study on Instant Date Powder in Natural Ziziphus jujuba through Vacuum Freeze-drying

[Objective] The aim was to get optimized conditions for date powder with good color and taste.[Method] The pectinase enzymolysis and vacuum freeze-drying technology were used in the extract process of date powder.[Result] The production boasts of superior quality were with rich fragrance and uniform particle under certain process conditions.The optimized conditions for pectinase enzymolysis were:the amount of pectinase reached to 0.1% of that of date syrup,enzymolysis temperature and time were 50 ℃ and 50 min respectively,the pH value was 4.0.The optimized conditions for vaccum freeze-drying were:10% altodextrin,three times volumn of water with the thickness of 7 mm.[Conclusion] The optimized conditions were obtained in this study to produce instant date powder from Ziziphus jujuba.

High-concentration dispersions of exfoliated MoS2 sheets stabilized by freeze-dried silk fibroin powder

Liquid-phase exfoliation （LPE） is an attractive method for the scaling-up of exfoliated MoS2 sheets compared to chemical vapor deposition and mechanical cleavage. However, the MoS2 nanosheet yield from LPE is too small for practical applications. We report a facile method for the scaling-up of exfoliated MoS2 nanosheets using freeze-dried silk fibroin powders. Compared to MoS2 dispersion in the absence of silk fibroin powder, sonicated MoS2 dispersions with silk fibroin powder （MoSJSilk dispersion） show noticeably higher exfoliated MoS2 nanosheet yields, with suspended MoS2 concentrations in MoS2/Silk dispersions sonicated for 2 and 5 h of 1.03 and 1.39 mg.mL-1, respectively. The MoS2 concentration in the MoS2/Silk dispersion after centrifugation above 10,000 rpm is more than four times that without the silk fibroin. The size of the dispersed silk fibroin is controlled by the change of centrifugation rate, showing the removal of silk fibroin above tens of micrometers in size after centrifugation at 2,000 rpm. Size-controlled silk fibroin biomolecules combined with MoS2 nanosheets are expected to increase the practical use of such materials in fields related to tissue engineering, biosensors and electrochemical electrodes. Atomic force microscopy and Raman spectroscopy provide the height of the MoS2 nanosheets spin-cast from MoS2/Silk dispersions, showing thicknesses of 3--6 nm. X-ray photoelectron spectroscopy and X-ray diffraction indicate that the outermost surface layer of the hydrophobic MoS2 crystals interact with oxygen-containing functional groups that exist in the hydrophobic part of silk fibroins. The amphiphilic properties of silk fibroin combined with the MoS2 nanosheets stabilize dispersions by enhancing solvent-material interactions. The large quantities of exfoliated MoS2 nanosheets suspended in the as-synthesized dispersions can be utilized for the fabrication of vapor and electrochemical devices requiring high MoS2 nanosheets contents.

Luminescence properties of nitrogen-rich Ca-SiAlON:Eu2+ phosphors prepared by freeze-drying assisted combustion synthesis

Nitrogen-rich Eu2+-doped Ca-α-SiAlON phosphors(Cam/2-xSi12-m-nAlm+nOnN16-n:xEu) were synthesized by a freeze-drying assisted combustion synthesis(CS) route. Fast-synthesized products with high purity and uniform particle morphology were confirmed by X-ray diffraction(XRD) and scanning electron microscopy(SEM). The analysis of lattice parameters by comparison with empirical equations showed that the as-prepared phosphors had low oxygen content. A series of samples were prepared according to the stoichiometry of Cam/2-0.08Si12-mAlmN16:0.08 Eu for further research. The influences of m value on the luminescence properties were investigated in detail. As m increased, a redshift phenomenon was observed in both the excitation and emission spectra. First-principle electronic structure calculations showed that the 3d energy level of Ca played an important role in the occurrence of the redshift phenomenon.

新生儿上消化道出血的几种药物治疗的疗效比较

目的:比较不同药物胃内注入治疗新生儿上消化道出血的疗效。方法:108例新生儿上消化道出血患儿,随机分为3组,分别给予云南白药、凝血酶、奥美拉唑加思密达胃内注入进行治疗。结果:云南白药、凝血酶、奥美拉唑加思密达总有效率分别为86.7%、94.4%、95.2%,各组间比较无显著差异(P>0.05),但凝血酶组和奥美拉唑加思密达组的显效率分别为66.7%、76.2%,均显著高于云南白药组(P<0.01)。结论:云南白药、凝血酶、奥美拉唑加思密达胃内注入均是治疗新生儿上消化道出血的安全有效方法,故临床上可根据具体情况选择不同方法进行治疗。

Physicochemical Properties and Sensory Evaluation of Sponge Cake Supplemented with Hot Air and Freeze Dried Oyster Mushroom (<i>Pleurotus sajor-caju</i>)

The study was aimed to enhance the nutritional quality of sponge cakes with oyster mushroom (Pleurotus sajor-caju). In this study, the physicochemical, functional, and sensory properties of cake supplemented with five different levels of mushroom powder (0 as control, 5%, 7%, 10%, and 12%) were evaluated. The results revealed that both hot air dried (HD) and freeze dried (FD) mushroom powder contained a higher amount of protein, fat, ash and fiber ontent compared with wheat flour used in cake, but the carbohydrate and moisture content showed the reverse trend. The study also found that increasing the level of fortification from 0% to 12% mushroom powder also increased the protein, fat, ash, and fiber content in the cake. FD mushroom powder significantly (p ≤ 0.05) recorded the highest protein (11.72% - 15.16%), fat (20.01% - 21.9%), ash (1.75% - 1.92%), and fiber (1.39% - 1.74%) with increasing the level of supplementation from 5% - 12%. In contrast, carbohydrate content of cake decreased from 34.13% - 31.15% with increasing the level of FD mushroom from 5% - 12%. Also, the volume and weight of the cake with FD mushroom were higher compared to HD and control sample. The results of sensory evaluation indicated that sponge cake with 10% FD oyster mushroom was rated the most acceptable after the control.

七厘散联合西药预防髋、膝关节置换术后下肢深静脉血栓形成疗效观察

[目的]观察七厘散联合西药预防髋、膝关节置换术后下肢深静脉血栓形成疗效。[方法]将75例住院患者病志号抽签随机分为两组。对照组37例阿司匹林;低分子肝素钙。治疗组38例七厘散,1剂/d,早晚温服;西药治疗同对照组。连续治疗5 d为1疗程。观测临床表现、全血高切黏度、全血低切黏度、凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)、纤维蛋白原(Fbg)、下肢深静脉血栓形阳性率、不良反应。治疗1疗程(5 d),判定疗效。[结果]下肢深静脉血栓形阳性率治疗组2. 63%(1/38)低于对照组16.22%(6/37),(P<0.05)。全血高切黏度、全血低切黏度、PT、APTT、Fbg两组均有改善(P <0.05,P<0.01),全血高切黏度、全血低切黏度、PT、Fbg治疗组改善优于对照组(P<0.05,P <0.01),APTT两组无显著差异(P>0.05)。[结论]七厘散联合西药预防髋膝关节置换术后下肢深静脉血栓形成,疗效满意,无严重不良反应,值得推广。

自制凝血酶原冻干粉纱块外敷对经外周静脉穿刺中心静脉置管穿刺口出血的效果研究

目的:探究自制凝血酶原冻干粉纱块外敷对老年患者经外周静脉穿刺中心静脉置管(PICC)穿刺口出血的临床效果。方法:选取南方医科大学附属广东省人民医院2022年1月—2023年2月收治的94例老年PICC患者,将其随机分为对照组与试验组,各47例。对照组患者术后穿刺口预防出血实施常规干预,试验组采用自制凝血酶原冻干粉纱块外敷。比较两组干预效果。结果:试验组穿刺口渗血发生率较对照组低,穿刺口持续渗血时间较对照组短,置管<1周的置管并发症发生率较对照组低,差异有统计学意义(P<0.05)。两组患者置管1周时凝血酶原时间、活化部分凝血活酶时间、凝血酶时间、纤维蛋白原水平比较,差异无统计学意义(P>0.05)。结论:对老年患者PICC穿刺口出血防护中应用自制凝血酶原冻干粉纱块外敷,可缩短穿刺口持续渗血时间,降低渗血严重程度及置管并发症发生率,对凝血功能无明显影响。