Effects of Meat and Phosphate Level on Water-Holding Capacity and Texture of Emulsion-Type Sausage During Storage

This paper was designed to verify the influence of phosphate on water-holding capacity （WHC） and texture of emulsiontype sausage prepared with pre-rigor meat, ageing meat or frozen meat. Pre-rigor pork, ageing pork and frozen pork were pre-blended with five levels of phosphate and made into emulsion-type sausage. The yield, hardness and total expressible fluid （TEF） were measured with texture profile analysis machine and pressiometer when emulsion-type sausage was produced. Meanwhile, hardness and purge loss （PL） were measured during 30 d storage. As emusion-type sausage made by pre-rigor meat, higher yield and relatively stable hardness could be found. It indicated that increasing of phosphate level caused an alleviatable effects in increasing of hardness when emulsion-type sausage made by pre-rigor meat, but opposite effects made by ageing meat or frozen meat. The distribution of PL of emulsion-type sausage was found to be affected by phosphate addition. Significant decrease of PL could not be obtained by increasing of phosphate level during storage. Pre-rigor meat improved WHC and texture of emulsion-type sausage. Problem of WHC and texture of emulsiontype sausage during storage could not be resolved by single use of phosphate at relatively higher level （3%） of NaCl.

Synthesis and electrochemical properties of dual doped spinels LiNi_xAl_yMn_(2-x-y)O_4 via facile novel chelated sol–gel method as possible cathode material for lithium rechargeable batteries

LiMnOand LiNiAlyMnO（x= 0.50;y = 0.05-0.50） powders have been synthesized via facile solgel method using Behenic acid as active cheiating agent.The synthesized samples are subjected to physical characterizations such as thermo gravimetric analysis（TG/DTA）,X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FT-IR）,field-emission scanning electron microscopy（FESEM）,transmission electron microscopy（TEM） and electrochemical studies viz.,galvanostatic cycling properties,electrochemical impedance spectroscopy（EIS） and differential capacity curves（dQ/dE）.Finger print XRD patterns of LiMnOand LiNiAlMnOfortify the high degree of crystallinity with better phase purity.FESEM images of the undoped pristine spinel illustrate uniform spherical grains surface morphology with an average particle size of 0.5 μm while Ni doped particles depict the spherical grains growth（50nm） with ice-cube surface morphology.TEM images of the spinel LiMnOshows the uniform spherical morphology with particle size of（100 nm） while low level of Al-doping spinel（LiNio.5Alo.05Mn1.45O4） displaying cloudy particles with agglomerated particles of（50nm）.The LiMnOsamples calcined at 850℃ deliver the discharge capacity of 130 mAh/g in the first cycle corresponds to 94%coiumbic efficiency with capacity fade of 1.5 mAh/g/cycle over the investigated 10 cycles.Among all four dopant compositions investigated,LiNiAlMnOdelivers the maximum discharge capacity of 126 mAh/g during the first cycle and shows the stable cycling performance with low capacity fade of 1 mAh/g/cycle（capacity retention of 92%） over the investigated 10 cycles.Electrochemical impedance studies of spinel LiMnOand LiNiAlMnOdepict the high and low real polarization of 1562 and 1100 Ω.

Plugging performance and mechanism of an oil-absorbing gel for lost circulation control while drilling in fractured formations

Lost circulation of drilling fluid is one of the most common engineering problems in the drilling process of fractured formations.In this study,an oil-absorbing polymer gel synthesized using compound monomers with rigid and flexible chains was applied to control the oil-based drilling fluid loss while drilling.The microstructure,oil-absorbing performance,and plugging performance the gel was investigated.A large number of dense pores on the surface of the gel were observed,which allowed the oil molecules to enter the internal space of the gel.The initial oil absorption capacity of the gel was fast,and it increased with the increase in the temperature and decrease in the particle size,reaching 20.93 g/g at140℃.At a high temperature of 140℃,the bearing pressure capacity of the gel formula containing particles of different particle sizes reached 7.6 MPa for a fracture of a width of 3 mm,showing that the oil-absorbing gel have excellent plugging performance at high temperature.Plugging mechanism of the gel was investigated through visualized fracture plugging experiments.Results show that the dynamic migratio n,particle-swelling,particle-bridging,particle-aggregation,deformation-filling,and compaction-plugging contribute to the whole lost circulation control process,reflecting that the plugging performance can be effectively enhanced by improving the aggregation and filling degrees of the gel with different particle sizes.

Preparation of layered oxide Li(Co_(1/3)Ni_(1/3)Mn_(1/3))O_2 via the sol-gel process

To obtain homogenous layered oxide Li（Co1/3Ni1/3Mn1/3）O2 as a lithium insertion positive electrode material, the sol-gel process using citric acid as a chelating agent was applied. The material Li（Co1/3Ni1/3Mn1/3）O2 was synthesized at different calcination temperatures. XRD experiment indicated that the layered Li（Co1/3Ni1/3Mn1/3）O2 material could be synthesized at a lower temperature of 800℃, and the oxidation state of Co, Ni, and Mn in the cathode confirmed by XPS were ＋3, ＋2, and ＋4, respectively. SEM observations showed that the synthesized material could form homogenous particle morphology with the particle size of about 200 nm. In spite of different calcination temperatures, the charge-discharge curves of all the samples for the initial cycle were similar, and the cathode synthesized at 900℃ showed a small irreversible capacity loss of 11.24% and a high discharge capacity of 212.2 mAh·g^-1 in the voltage range of 2.9-4.6 V.

Silica Gel Supported Hydrophobic Ionic Liquid for Selective Extraction and Determination of Coumarin

In this study, a modified silica gel surface with a hydrophobic ionic liquid (SG-1,10-PhenanNTf2) was used as an adsorbent for a selective extraction of coumarin prior to its determination by use of high performance liquid chromatography. Results demonstrated that SG-1,10-PhenanNTf2 phase had a good adsorption capacity up to 85.29 mg?g?1, high selectivity, good site accessibility and fast binding kinetics toward coumarin. The adsorption capacity for coumarin was improved by 62.33% with the SG-1,10-PhenanNTf2 phase as compared to activated silica gel. Adsorption isotherm data displayed that the adsorption process was mainly monolayer on a homogeneous adsorbent surface, confirming the validity of Langmuir adsorption isotherm model. The adsorption of coumarin on the SG-1,10-PhenanNTf2 phase was accomplished after only 60 min contact time. Results of kinetic models showed that the adsorption of coumarin on the SG-1,10-PhenanNTf2 phase obeyed a pseudo second-order kinetic model. Finally, the efficiency of this methodology was confirmed by applying it to real water samples.

Sol-Gel Synthesis Using Novel Chelating Agent and Electrochemical Characterization of Binary Doped LiMn2O4 Spinel as Cathode Material for Lithium Rechargeable Batteries

LiMn2O4 and LiCuxCryMn2-x-yO4 (x = 0.50;y = 0.05 - 0.50) powders have been synthesized via sol-gel method for the first time using Myristic acid as chelating agent. The synthesized samples have been taken to physical and electrochemical characterization such as thermo gravimetric analysis (TG/DTA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and electrochemical characterization viz., electrochemical galvanostatic cycling studies, electrochemical impedance spectroscopy (EIS) and differential capacity curves (dQ/dE). XRD patterns of LiMn2O4 and LiCuxCryMn2-x-yO4 confirm high degree of crystallinity with good phase purity. FESEM image of undoped pristine spinel lucidly depicts cauliflower morphology with good agglomerated particle size of 50 nm while 0.5-Cu doped samples depict the pebbles morphology. TEM images of the spinel LiMn2O4 and LiCu0.5Cr0.05Mn1.45O4 authenticate that all the synthesized particles via sol-gel method are nano-sized (100 nm) with spherical surface and cloudy particles morphology. The LiMn2O4 samples calcined at 850℃ deliver the high discharge capacity of 130 mA·h/g with cathodic efficiency of 88% corresponds to 94% columbic efficiency in the first cycle. Among all four compositions studied, LiCu0.5Cr0.05Mn1.45O4 delivers 124 mA·h/g during the first cycle and shows stable performance with a low capacity fade of 1.1 mA·h/g cycle over the investigated 10 cycles.

Low-temperature combined with high-humidity thawing improves the water-holding capacity and biochemical properties of Portunus trituberculatus protein

This study compared the effects of conventional thawing methods(water immersion thawing(WIT,(25±1)℃),natural air thawing(AT,(25±1)℃,relative humidity(RH(65±2)per cent),refrigerator thawing(RT,4℃,RH(80±2)per cent)and low-temperature(LT)combined with high-humidity thawing LT,-1℃to 1℃(LT-1-1),2-4℃(LT2-4),5-7℃(LT5-7)and 8-10℃(LT8-10),RH>95 per cent)on the water-holding capacity,lipid oxidation and biochemical properties of Portunus trituberculatus(P.trituberculatus)myofibrillar protein.The results showed that WIT and AT significantly decreased the water-holding capacity while dramatically increasing lipid oxidation,protein oxidation and degeneration,resulting in serious P.trituberculatus quality deterioration.High humidity was beneficial for P.trituberculatus\.ha\A/\ng.The thawing time of P.trituberculatus under the conditions of LT2-4 was only 39.39 per cent of that of conventional air thawing at 4℃(RT),and the LT2-4 samples not only maintained better water-holding capacity but also had an obviously reduced degree of lipid oxidation,protein oxidation and denaturation.Thawed samples LT2-4 and LT5-7 provided better maintenance of P.trituberculatus quality than the LT-1-1 and LT8-10 samples.The best quality was exhibited after thawing at 2-4℃.The levels of thiobarbituric acid reacting substances,carbonyl content and surface hydrophobicity observably decreased in these samples,while the total sulfhydryl contents dramatically increased compared to those of conventionally thawed samples,indicating lower lipid oxidation and protein oxidation.Moreover,the Ca2+-ATPase activity of the sample thawed at 2-4℃(2.06 μmol Pi/mg prot/h)was markedly higher than that of samples subjected to WIT and AT.The product qualities observed after thawing at-1℃to 1℃,5-7℃and 8-10℃under LT were comparable to that observed by RT.Considering its thawing efficiency and product quality,LT is a suitable method for the thawing of P.trituberculatus,and the ideal thawing conditions were LT at 2-4℃.

Synthesis and Characterization of Titania and Rare Earth Doped Titania Nanoparticles by Sol-gel Process

Titania sol has been prepared by the sol-gel process with Ti（OC 4 H 9 ） 4 as precursor. TiO 2 gel was obtained through hydrolysis and condensation process. Rare earth such as La 2 O 3 , CeO 2 and Gd2O3 were introduced into the nanostructure TiO 2 . After TiO 2 and rare earth doped TiO 2 powders were calcined at 400℃, 500℃, 600℃, 700℃ and 800℃ respectively, the characteristic analyses of the TiO 2 samples were studied by UV-VIS, XRD and TEM etc. It was found that there are some stronger absorption peaks at 200-325 nm. The rare earth doping can increase the phase transition temperature converting anatase phase into rutile phase, can decrease the grain size of TiO 2 particles and can improve the anti-UV capacity of the coating fabrics.

Study on Quantitative Model of Karst Drainage Basin Water-Holding Based on Principal Component Analysis: A Case Study of Guizhou, China

In Karst drainage basins, there are the ground water and underground water exchanging frequently, and the shortage of water resources due to having the special double aquifer mediums and unique surface and subsurface river systematic structure. This paper is to select 20 research sampling areas coming fromGuizhouProvince, and according to the spectral characteristics of the catchment water-holding mediums and vegetations, and using the remote sensing technique, extract the watershed vegetation index. According to the principle of principal component analysis, using the software of Spss and Matlab is to analyze the impacts of watershed vegetation type on the catchment water-holding ability, and establish the principal component analysis function. Studies have shown that: 1) the watershed vegetation coverage rate plays an important role in Karst basin water-holding ability;2) the catchment water-holding ability is the comprehensive reflection and manifestation of the Catchment Water-storing Capacity (CWC);3) it is much better effects and higher accuracy to monitor/forecast the catchment water-holding volume by using the vegetation indices.

延迟成胶弹性硅酸凝胶堵水剂及其性能研究

针对现有硅酸凝胶堵水剂普遍存在成胶时间短、成胶后脆性大的问题,结合L油田油藏条件,通过考察活化剂类型及用量,弹性改善剂类型及用量,以及水玻璃用量对成胶时间和弹性模量的影响,得出了一种延迟成胶弹性硅酸凝胶堵水剂。其配方为:6%水玻璃+0.85%活化剂三元弱酸一铵GL-1+0.1%弹性改善剂正电胶,该配方在油藏温度65℃下,成胶强度达到E级的时间为72 h,成胶后的弹性模量为589.46 Pa。采用填砂管实验评价了堵水剂的注入性及封堵性,结果表明堵水剂在L油田中具有良好的注入性及封堵性,在渗透率为1168.06×10^(-3)~5061.57×10^(-3)μm^(2)的填砂管中,注入0.8 PV的最高注入压力仅有0.72 MPa,封堵率均>96%。该堵水剂可用于L油田的油井堵水。

Phonopheresis Associated with Nanoparticle Gel from Phyllanthus amarus Relieves Pain by Reducing Oxidative Stress and Proinflammatory Markers in Adults with Knee Osteoarthritis

Objective: To determine the changes in serum levels of inflammatory biomarkers and antioxidant levels among the knee osteoarthritis(OA) patients after treatment with Phyllanthus amarus(PP) by nanoparticle gel phonophoresis. Methods: This study was a randomized, double-blind, placebo-control, parallel-group, clinical trial involving 30 subjects with mild-to-moderate degree of knee OA. The patients were allocated to two groups using a computer-generated random numbers, and received conventional ultrasound therapy(control group, 15 cases) and PP(treatment group, 15 cases) once daily for 10 sessions. The pain was evaluated by visual analogue scale(VAS). Serum levels of tumor necrosis factor-α(TNF-α) were determined by enzyme-linked immunosorbnent assay(ELISA). Nitric oxide(NO) was determined by modified Griess reagent. The antioxidant effects, including superoxide dismutase(SOD) and total antioxidant capacity(TAC), were also measured by ELISA assay. Results: The VAS score was significantly decreased in the treatment group compared with the control group after treatment(P<0.01). The serum concentrations of TNF-α and NO were significantly reduced in the treatment group compared with the control group(P<0.01) after treatment. However, the serum concentrations of SOD and TAC in the treatment group were significantly higher after treatment compared with the control group(P<0.01). Conclusion: PP could alleviate knee pain and significantly reduce systemic antiinflammatory effects in knee OA patients.

枸杞粉对白鲢鱼糜凝胶品质的影响

该研究以冷冻白鲢鱼糜为实验原料,向其中添加枸杞粉(wolfberry powder,WP),分析不同添加量[0.25%、0.5%、0.75%、1%、1.5%(质量分数)]的WP对白鲢鱼糜凝胶持水性、蒸煮损失率、白度值、水分分布、凝胶特性、微观结构、感官评价及气味特征的影响。结果表明,随着WP含量的增加,鱼糜凝胶的持水性、硬度、咀嚼性和凝胶强度都表现出先增大后减小的趋势,当WP的添加量为0.5%时达到最大,分别为78.55%、(2716.77±75.76)g、(2185.15±32.46)g和1087 g·cm;而蒸煮损失率则表现出先减小后增大的趋势,在0.5%的添加量时,蒸煮损失率最小,为7.49%。在鱼糜中加入WP后,可以减少鱼糜凝胶中自由水的比例,增加不易流动水的比例,使鱼糜凝胶保留更多水分,且当WP在最适添加量0.5%时,鱼糜凝胶中只检测到结合水和不易流动水,未检测到自由水。适量WP的添加会增强鱼糜凝胶的网络结构,使其变得更加致密均匀。WP的添加会减小鱼糜凝胶的白度值和色泽评分,但在最适添加量0.5%时,其颜色总体可接受。此外,感官评价和电子鼻分析结果表明,当WP在最适添加量0.5%时,可以显著改善鱼糜凝胶的风味品质。研究结果可为生产高品质的鱼糜产品提供理论依据。

基于脂肪替代品的柠檬果胶凝胶特性

为提高柠檬皮渣的经济效益,拓宽柠檬高酯果胶在脂肪替代品中的应用,该文针对果胶凝胶作为固态脂肪替代品的相关要求,探讨柠檬高酯果胶的凝胶特性。以柠檬皮渣为原料采用超声辅助柠檬酸法提取果胶,考察柠檬果胶凝胶质构的影响因素,并在质构结果基础上进一步分析果胶质量分数对凝胶流变学特性及持水性能的影响。结果表明,所制备的柠檬果胶为高酯果胶,影响其凝胶质构特性的主要因素有果胶质量分数、蔗糖质量分数和pH值。当果胶质量分数为1.8%、蔗糖质量分数为68%、pH值为2.7时果胶凝胶具有最好的质构特性、流变性及持水性,此时果胶凝胶结构最为稳定,综合性能最优。

胍胶压裂液对塔24区储层伤害机理分析

塔24区块储层是典型的致密储层,储层发育不成熟,地层性质复杂,压裂液伤害机理不明确。为明确胍胶压裂液体系对塔24区块储层的伤害机理,将胍胶压裂液体系分为胍胶压裂液基液、破胶液、胍胶压裂液滤液、胍胶压裂液基液与破胶液,利用岩心酸化流动仪测试四种液体对岩心导流能力的影响,结合CT扫描分析岩心内液体分布与孔隙孔喉变化,揭示了四种不同液体对储层的伤害机理。分析实验结果发现:胍胶压裂液基液与破胶液对储层伤害最严重,主要原因是胍胶堵塞、岩心酸蚀作用产生沉淀;胍胶压裂液基液堵塞岩心内大孔隙孔喉,破胶液堵塞岩心的大孔喉、中小孔隙孔喉。胍胶压裂液配方经改良后,降低胍胶质量分数为0.35%,降低破胶液中过硫酸钾质量分数为0.06%,岩心孔隙伤害率降低9%,孔喉伤害率降低41%,优化效果显著。

4种稳定剂对凝固型酸奶品质的影响

利用卡拉胶、黄原胶、魔芋胶和琼脂作为稳定剂,探究其对凝固型酸奶品质的影响。结果表明,不同稳定剂对凝固型酸奶pH值的影响不显著,但会增加其酸度;黄原胶、魔芋胶和琼脂会提高凝固型酸奶的持水率,降低乳清析出率;4种稳定剂的添加均能增加凝固型酸奶的凝胶强度和硬度。

芋头粉对白鲢鱼糜制品品质的影响

为改善白鲢鱼糜制品的凝胶特性及风味品质,本文以冷冻白鲢鱼糜为研究对象,研究了不同芋头粉添加量(0、0.1%、0.25%、0.5%、1%、1.5%(w/w))对白鲢鱼糜制品持水性、蒸煮损失率、白度值、水分分布、凝胶性能、感官品质及气味特征的影响。结果表明,随着芋头粉添加量的增加,鱼糜制品的持水性、硬度、咀嚼性和凝胶强度均呈现先增大后减小的趋势,而蒸煮损失率则表现为先减小后增大的趋势,且当芋头粉的添加量为0.25%时,鱼糜制品的持水性、硬度、咀嚼性及凝胶强度均增加到最大值,分别为78.61%、1815.65±23.47 g、1446.85±70.28 g和831.19 g·cm,蒸煮损失率降低到最小值,为13.42%。当芋头粉添加量在0.1%~0.25%时,越来越多的芋头粉吸水溶胀,填充于鱼糜蛋白的网络结构中束缚住更多的水分,使鱼糜制品中结合水和不易流动水不断增加,最终使得鱼糜制品的凝胶特性增强,但当芋头粉的添加量大于0.25%时,过多的芋头粉反而会阻碍鱼糜蛋白的交联,导致自由水增加,使鱼糜制品的凝胶特性减弱。感官评价和电子鼻分析表明,当芋头粉在最适添加量0.25%时,还可以改善鱼糜制品的风味品质。本研究为高质量鱼糜制品的生产提供了理论依据。

空气取水用硅胶/MgCl_(2)复合吸附剂吸附性能研究

通过浸渍法合成了一种硅胶/MgCl_(2)新型复合材料。探究了球型硅胶孔径和粒径、MgCl_(2)溶液浓度、吸附环境温湿度对硅胶/MgCl_(2)复合吸附剂吸附性能的影响。实验表明,复合吸附剂的吸附能力与硅胶孔径成正比,与硅胶粒径成反比。在25℃、50%RH下,SG-A/M20、SG-B/M20、SG-C/M20的平衡吸附量分别为0.25,0.37,0.39 g/g;在25℃、35%RH下,SG-D/M20、SG-A/M20、SG-E/M20的平衡吸附量分别为0.21,0.16,0.14 g/g。RH为35%~80%时,复合吸附剂的吸附量随RH增大而增大,温度为25~35℃时,复合吸附剂的吸附量随温度升高先增大后减小。在25℃、RH 80%下,SG-B/M20取得最大吸附量0.58 g/g。复合吸附剂在110℃下脱附90 min水蒸气脱附率>98%。SG-B/M20、SG-C/M20具有良好的循环稳定性,经8次吸附-脱附循环后吸附量减小量<0.03 g/g。硅胶/MgCl_(2)复合吸附剂的水蒸气吸附性能探究,为硅胶基复合材料在空气取水领域的应用提供数据参考。

超高压及植物油添加量对兔肌球蛋白热凝胶特性的影响

为研究超高压处理及植物油添加量对兔肌球蛋白热凝胶特性的影响,在不同压力条件(100、150、200 MPa)下对兔肌球蛋白进行10℃、2 min超高压处理,然后分别添加不同体积分数(0%、10%、20%、30%)的大豆油和磷酸盐缓冲液制备乳化体系,再利用程序升温(1℃/min)制备凝胶,并以未经高压处理的肌球蛋白作为空白对照。利用流变仪、质构分析仪、扫描电子显微镜、低场核磁共振分析仪等对热凝胶的储能模量G′、损耗模量G″、凝胶强度、保水性、微观结构和弛豫时间等指标进行测定。结果表明:与空白对照组相比,高压处理及添加油脂使兔肌球蛋白热凝胶的G′、G″、凝胶强度、保水性等指标均明显增加;通过扫描电子显微镜观察到经复合处理的凝胶三维网络结构变得更加致密和紧凑,低场核磁共振分析结果显示凝胶基质中的自由水相对含量随着压力的增加逐渐减少,不易流动水质子结合程度增加,结合水组分相对含量明显增多。在相同压力处理条件下,兔肌球蛋白热凝胶的G′、G″、凝胶强度、保水性随着油脂添加量的增加而增大,即0%处理组<10%处理组<20%处理组<30%处理组,且相互之间差异显著(P<0.05);其中,在200 MPa下添加30%油脂时,兔肌球蛋白热凝胶性能最好。综上,适当的高压处理结合油脂的添加,一定程度增强了蛋白质和脂肪的相互作用,改变了肌球蛋白热凝胶的微观结构和水分分布状态,从而表现出相应流变特性、质构特性、保水性等凝胶特性的变化,进而对改善兔肌球蛋白热凝胶的功能特性发挥积极作用。

动物肝脏均质液的添加对鱼糜凝胶特性的影响

为了研究畜禽动物肝脏的添加对鱼糜凝胶特性的影响,本研究选取猪肝和鸭肝制备均质液,分别以5%或10%的比例添加入鲢鱼鱼糜中,并测定分析混合鱼糜凝胶的质构特性、流变学性质、水分分布、分子间作用力等。结果显示,肝脏均质液的加入提高了鱼糜凝胶的硬度以及储能模量(G’)和损耗模量(G’’),降低了凝胶的白度值、回复性和内聚性,对凝胶体系中水分分布未见显著影响;随着肝脏均质液添加量由5%提高到10%,鱼糜凝胶的硬度未呈现显著变化,而白度、回复性和内聚性则进一步下降;鸭肝均质液的TG酶粗酶活显著高于猪肝组,5%添加量下,破坏体系中离子键、氢键、疏水键、二硫键之后鸭肝混合鱼糜凝胶中蛋白质溶解性高于猪肝组,SDS-PAGE分析显示添加鸭肝组的样品相比猪肝组其肌球蛋白重链条带变浅,可能是更多的肌球蛋白参与了TG酶介导的分子间共价交联所致;10%添加量的情况下,猪肝组鱼糜凝胶强度以及不易流动水的比例相比对照组显著下降,而鸭肝组未见差异。初步研究表明5%猪肝均质液的添加对冷冻鲢鱼鱼糜凝胶的性能有显著影响,可能与其中含有TG酶有关,需要进一步研究揭示。

改性乳清蛋白对凝固型酸奶品质及胆酸盐结合能力的影响

本研究利用酶结合苹果酸复合改性乳清蛋白(WPI-E+MA),添加至凝固型酸奶,以期改良凝固型酸奶质构及胆盐结合能力。通过蛋白质浓度、持水力、游离巯基、粒径、粘弹性及胆酸盐结合能力等指标,评价WPIE+MA对凝固型酸奶品质、凝胶结构及胆酸盐结合能力的影响。结果表明,WPI-E+MA能够改善凝固型酸奶的持水力、表观粘度、剪切应力与粘弹性,8%添加量时达到最优;酸奶的凝胶网状交联结构因WPI-E+MA的添加变得更加致密、聚合度更高。脱氧胆酸钠(SDC)、胆酸钠(SC)、牛磺胆酸钠(STC)结合率均在8%的添加量达到最大值,结合能力良好。WPI-E+MA可有效改善凝固型凝固型酸奶的品质并显著提高胆酸盐结合能力。