Clinical effect of deproteinized calfblood extract eye gel for corneal epithelial defect

Objective: To observe the clinical effect of 20% deproteinized calfblood extract eye gel on the treatment of mechanical injury to corneal epithelium. Methods: 120 cases of patients with corneal epithelial defect caused by mechanical injury were selected and randomly divided into observation group (60 eyes, deproteinized calfblood extract eye gel in use) and control group (0.3% ofloxacin eye drops in use). Both two groups of patients were given eye gel or eye drops 4 times per day. Moreover, the two groups of eye symptoms and corneal epithelial healing were observed on the 3rd day and the 7th day after drug usage respectively. Results: The effective rates of 20% deproteinized calfblood extract eye gel on the treatment of mechanical corneal epithelial defect on the 3rd day and the 7th day were 78.33% and 93.33% respectively. Meanwhile, the effective rates of 0.3% ofloxacin eye drops were 55.00% and 71.67%. The difference in the comparison of the effective rate between two groups was of statistical significance (p < .05). Conclusions: 20% deproteinized calfblood extract eye gel can significantly promote the healing of corneal epithelium in a short time, and it is worthy to be widely applied clinically.

<i>Arthrobacter arilaitensis</i>Re117 as a Source of Solvent-Stable Proteases: Production, Characteristics, Potential Application in the Deproteinization of Shrimp Wastes and Evaluation in Liquid Laundry Commercial Detergents

The present study describes the characterization of crude protease extract from Arthrobacter arilaitensis Re117 and its evaluation in solid and liquid detergent. One caseinolytic protease clear band was observed in zymogram. The crude alkaline protease showed optimum activity at pH 9.0 and 50&degC, and it was highly stable over a wide range of pH from 8.0 to 9.0. Proteolytic enzymes showed extreme stability towards non-ionic surfactants (Tween 80, Tween 20 and Triton X-100) and stimulate activity towards oxidizing agents such as sodium perborate. They also showed high stability and compatibility with various laundry solid detergents from Tunisian market. The protease of A. arilaitensis Re117, was also tested for shrimp waste deproteinization to produce chitin. The protein removal with a ratio E/S of 20 was about 83%. The novelties of the Re117 protease include its high stability to organic solvents and surfactants. These unique properties make it an ideal choice for application in detergent formulations and enzymatic peptide synthesis. In addition, the enzyme may find potential applications in the deproteinization of shrimp wastes to produce chitin.

Surface-modified deproteinized human demineralized tooth matrix for bone regeneration:physicochemical characterization and osteoblast cell biocompatibility

Tooth presents an intriguing option as a bone graft due to its compositional similarity to bone.However,the deproteinized human demineralized tooth matrix(dpDTM),developed to overcome the limited availability of autologous tooth grafts,has suboptimal pore size and surface roughness.This study aimed to fabricate a surface-modified dpDTM using acid etching and collagen coating,followed by in vitro evaluation of physicochemical and biological properties.The dpDTM was modified into two protocols:Acid-modified dpDTM(A-dpDTM)and collagen-modified dpDTM(C-dpDTM).Results demonstrated that A-dpDTM and C-dpDTM had increased pore sizes and rougher surfaces compared to dpDTM.Collagen immobilization was evidenced by nitrogen presence exclusively in C-dpDTM.All groups had a Ca/P molar ratio of 1.67 and hydroxyapatite as the sole constituent,with 65-67%crystallinity.Degradation rates significantly increased to 30%and 20%for C-dpDTM and A-dpDTM,respectively,compared to 10%for dpDTM after 120 days.Cumulative collagen release of C-dpDTM on Day 30 was 45.16 mg/ml.Osteoblasts attachment and proliferation were enhanced on all scaffolds,especially C-dpDTM,which displayed the highest proliferation and differentiation rates.In conclusion,surface modified of dpDTM,including A-dpDTM and C-dpDTM,significantly enhances bioactivity by altering surface properties and promoting osteoblast activity,thereby demonstrating promise for bone regeneration applications.

银耳多糖的纯化及其生物活性

为了得到纯度更高的银耳多糖(TFPS),采用AB-8大孔树脂吸附法、酶法、三氯乙酸(TCA)法、D-葡萄糖δ-内脂(GDL)法和聚酰胺法对粗制银耳多糖(CTFPS)进行纯化即脱蛋白处理。以多糖损失率和蛋白质脱除率为依据选取脱蛋白效果最佳的方法,并通过单因素实验优化银耳多糖脱蛋白工艺条件。利用红外和SEM对脱蛋白前后的银耳多糖进行结构分析,并结合抗氧化活性和吸湿保湿性能测试,对脱蛋白前后的银耳多糖进行生物活性对比。结果表明:AB-8大孔树脂吸附法的脱蛋白效果最佳,最优工艺条件为CTFPS水溶液质量浓度5 mg/mL、AB-8大孔树脂用量100 mg/mL、吸附时间5 h、吸附温度20℃;在此条件下,蛋白质脱除率为82.47%,多糖损失率为18.24%,且银耳多糖脱蛋白纯化后的抗氧化活性和吸湿保湿性能均优于未脱蛋白银耳多糖。

差异化蛋白脱除对早籼米粉性质的影响

[目的]探究差异化脱蛋白对米粉理化功能性质的影响机制。[方法]采用酶法、碱法对米粉进行差异化蛋白脱除,并对脱蛋白米粉的破损淀粉含量、粒径分布、颗粒表观形态、溶解度、膨润力、糊化特性及质构特性进行分析。[结果]蛋白凝胶电泳(SDS-PAGE)和激光共聚焦(CLSM)结果表明,碱法是等比例脱除各蛋白亚基,而酶法对淀粉颗粒表面蛋白脱除的均一性更好;原粉粒径分布的主峰大约在70μm处,而脱蛋白米粉的主峰则向左偏移至6μm处;随着蛋白含量的降低,脱蛋白米粉的破损淀粉含量呈下降趋势,而弹性、硬度显著升高,其中酶法3%米粉的粒径分布最为均一,D90最小(23.58μm),破损淀粉含量也由原粉的3.32%降低至1.48%,而弹性和硬度相比原粉分别提高了54.55%,52.60%;与原粉相比,脱蛋白米粉具有较低的峰值黏度、崩解值和最终黏度,其中酶法3%米粉的崩解值和回生值均最小,说明其热糊稳定性最好,且不易回生。[结论]碱法和酶法均能有效脱除蛋白,提升早籼米粉的粉质特性,相比之下酶法处理条件更加温和,蛋白和粒径分布更加均一,抑制回生效果更明显。

接枝型天然橡胶基吸水膨胀橡胶的制备及吸水膨胀性能

以脱蛋白天然橡胶(DPNR)胶乳作为改性橡胶的基材,在氧化还原引发体系作用下,基于橡胶大分子链中烯丙基与乙烯基单体的自由基乳液接枝共聚反应实现丙烯酸(AA)在DPNR链上的接枝共聚,从而制备了一种亲水性AA接枝改性DPNR共聚物(DPNR-g-PAA),通过傅里叶变换红外光谱、核磁共振氢谱、扫描电子显微镜和称重法表征了DPNR-g-PAA的分子结构、断面形貌和吸水膨胀性能。结果表明,DPNR-g-PAA作为吸水膨胀橡胶,其薄膜吸水率可达85.06%,DPNR的表面透湿性显著提高;与传统物理共混或溶液接枝共聚反应制备吸水膨胀橡胶工艺相比,由自由基乳液接枝共聚制得的DPNR-g-PAA具有一定的优势。

基于熵权TOPSIS模型对白芨多糖脱蛋白体系的评价研究

利用熵权TOPSIS模型对比Sevage法、乙腈法和三氯乙酸(TCA)法脱除粗白芨多糖(BSP)蛋白的效果,探究熵权TOPSIS用于BSP脱蛋白体系评价的合理性。以BSP保留率和蛋白质脱除率综合评分,筛选出最佳处理条件;构建出包括单糖组分、氧化自由基清除能力(ORAC)、DPPH自由基半数清除浓度(IC_(50))在内的9个具体评价指标的白芨多糖脱蛋白评价体系,以紫外分光光度计和傅里叶变换红外光谱仪扫描为辅,以熵权TOPSIS对三种白芨多糖除蛋白方案的结果进行评价。经过综合评分,Sevage法最佳萃取次数为1次,此时的蛋白质脱除率为22.9%,多糖保留率为99.11%;乙腈法最佳质量浓度为60%,蛋白质脱除率为89.11%,多糖保留率为97.36%;TCA法最佳质量浓度为10%,蛋白质脱除率为70.64%,多糖保留率为70.03%;对比同浓度下三种多糖的ORAC值和IC_(50)发现,乙腈法处理的多糖ORAC值高于阳性对照组(P<0.05),Sevage法处理后的多糖具有最强的抗氧化活性;白芨多糖脱蛋白评价体系经熵权TOPSIS模型分析结果表明Sevage法脱蛋白效果最优与预期结果相符。研究结果表明熵权TOPSIS模型可用于白芨多糖脱蛋白体系评价。

Properties of deproteinized bone for reparation of big segmental defect in long bone

Objective： To explore suitable scaffold material for big segmental long bone defect by studying the properties of the prepared deproteinized bone. Methods： Cancellated bone were made as 30 mm × 3 mm × 3 mm bone blocks from inferior extremity of pig femur along bone trabecula. The deproteinized bone was prepared with an improved method. Their morphological features, components, cell compatibility, mechanical and immunological properties were investigated respectively. Results： Deproteinized bone maintained natural re-ticular pore system. The main organic material is collagen I and inorganic composition is hydroxyapatite. It has good mechanical properties, cell adhesion rate and histocompatibility. Conlusion： This deproteinized bone can be applicable as scaffold for reparation of big segmental defect in long bone.

Biomechanical researches on tissue engineering bone constructed by deproteinated bone

Objective： To study biomechanical changes of newly formed bones 24 weeks after repairing large defects of long bones of goats using heterogeneous deproteinated bone （DPB） prepared by modified methods as an engineering scaffold. Methods： According to a fully randomized design, 18 goats were evenly divided into three groups： normal bone control group （Group A）, autologous bone group （Group B） and experimental group （Group C）. Each goat in Groups B and C were subjected to the periosteum and bone defect at middle-lower part of the right tibia （20% of the whole tibia in length）, followed by autologous bone or DPB plus autolognus MSCs ＋ rhBMP2 implantation, respectively and semi- ring slot fixation; while goats in Group A did not perform osteotomy. At 24 weeks after surgery, biomechanical tests were carried out on the tibias. Results： At 24 weeks after surgery, the results of anticompression test on tibias in three groups were recorded by a functional recorder presented as linear pressure-deformation curve. The shapes of the curves and their change tendency were similar among three groups. The ultimate pressure values were 10.74 MPa±1.23 MPa, 10. 11 MPa±1.35 MPa and 10.22 MPa±1.32 MPa and fracture compression rates were 26.82%±0.87%, 27.17%±0.75% and 28.22%±1.12% in Groups A, B and C, respectively. Comparisons of anti-compression ultimate pressures and fracture compression rates among three groups demonstrated no significant difference （PAB=0.415, PBC=0.494）. Three-point antibend test on tibias was recorded as load-deformation curves, and the shapes of the curves and their change tendency were similar among three groups. The ultimate pressure values of the anti-bend test were 481.52 N±12.45 N, 478.34 N±14.68 N and 475.62 N±13.41 N and the fracture bend rates were 2.62 mm±0.12 mm, 2.61 mm±0.15 mm and 2.81 mm±0.13 mm in Groups A, B and C, respectively. There was no significant difference between groups （PAB=0.7, PBc=0.448）. The ultimate anti-torsion torque values were 6.55 N.mi-0.25 N.m, 6.34 N＇m^0.18 N＇m and 6.42 N＇m^0.21 N＇m and fracture torsion rates were 29.51°±1.64°, 28.88±1.46° and 28.81°±1.33° in Groups A, B and C, respectively. There was no significant difference between groups （PAB=0.123, PBc=0.346）. Conclusions： The biomechanical characteristics of newly formed bones from heterogeneous DPB for repairing large segmental long bone defect are comparable to those of normal bones and autologous bones. DPB has the potential for clinical usage as bone graft material.

Immunological study on the transplantation of an improved deproteinized heterogeneous bone scaffold material in tissue engineering

Objective： To observe the immune response after the transplantation of a deproteinized heterogeneous bone scaffold and provides the theoretic reference for clinical practice. Methods： The fresh pig bone and deproteinized bone were transplanted respectively to establish BABL/C thigh muscle pouches model of male mice and take the samples for detection at 1, 2, 4, 6 weeks after operation. Lymphocyte stimulation index, subset analysis, serum specific antibody IgG, cytokine detection and topographic histologic reaction after implantation were investigated. Results： After the transplantation of deproteinized bone, lymphocyte stimulation index, CD4^＋ and CD8^＋ T-lymphocyte subsets, serum specific antibody IgG and cytokines in deproteinized bone group were significantly lower than those in fresh pig bone group at each time point （P〈0.05）. The histological examination found that in fresh bone group at each time point, a large quantity of inflammatory cells infiltrated in the surrounding of bone graft, and they were mainly lymphocytes, including macrophages and monocytes. In deproteinized bone group, there were few inflammatory cells infiltration around bone graft one week after operation. The lymphocytes were decreased as time went by. At 6 weeks, fibroblasts and fibrous tissue grew into the graft, and osteoclasts and osteoprogenitor cells appeared on the verge. Conclusions： The established heterogeneous deproteinized bone has low immunogenicity and is a potentially ideal scaffold material for bone tissue engineering.

Improving Energy Metabolism of Deproteinized Extract of Calf Blood Through Regulation of Hmgcs2y Cptla, Angptl4, Cyp8bl, and Ehhadh Genes in Mice

Herein, we described the physicochemical properties of deproteinized extract of calf blood(DECB) and established a hypoxia model treated with or without DECB to detect the sugar, lactic acid, protein, and ATP contents of mice and then identified and analyzed the differentially expressed genes between two groups using mRNA expression chip. According to the results of the airtight hypoxia experiment, mice in the model+DECB group had a signifi? cantly prolonged time of hypoxia tolerance compared with the model group. The biochemical test indicated that DECB could significantly increase the level of sugar, ATP and proteins and reduce the amount of lactic acid in mice. It also revealed that Hmgcs2, Cptla, Angptl4, Cyp8b], and Ehhadh genes were involved in mice energy metabolism, and were closely associated witli metabolic signaling pathway. These results suggest that DECB might be a potential drug to treat metabolic diseases. Among the genes with differential expression under hypoxia, Angptl4, Cyp8bl, and Ehhadh were critical factors for sugar metabolism. Hmgcs2 provided energy directly, and Cptla regulated cellular inflammatory responses, promoting energy metabolism.

小牛血去蛋白提取物眼用凝胶在老年性硬核性白内障小切口摘除手术中的应用效果

目的:研究小牛血去蛋白提取物眼用凝胶在老年性硬核性白内障小切口摘除手术中的应用效果。方法:选取我院2021年6月至2022年12月诊治的老年性硬核性白内障患者152例(152眼)作为研究对象。随机将患者分为对照组和观察组,各76例。对照组采取小切口摘除术,观察组在对照组基础上加用小牛血去蛋白提取物眼用凝胶治疗。分析对比两组术前及术后1、8 w的视力、前房炎性反应、角膜内皮细胞相关参数,其中视力采用标准视力量表测定,角膜内皮细胞相关参数采用SP-1P非接触型的角膜内皮细胞仪测量。结果:观察组术后1 w、8 w的矫正视力均较对照组显著提高(P<0.05);术后1 w前房炎性反应较对照组减轻(P<0.05)。两组术后1 w中央角膜厚度高于术前,而六边形细胞的比例、角膜内皮细胞的密度均显著低于术前;术后8 w中央角膜厚度显著低于术后1 w,六边形细胞的比例、角膜内皮细胞的密度均显著高于术后1 w;且观察组患者的术后1 w中央角膜厚度显著低于对照组,而六边形细胞的比例、角膜内皮细胞的密度显著高于对照组(P<0.05)。结论:小牛血去蛋白提取物眼用凝胶在老年性硬核性白内障小切口摘除手术中,能改善角膜内皮细胞相关参数。

高效虾壳脱蛋白菌株的筛选、产酶条件优化及酶学性质研究

该研究旨在筛选高效虾壳脱蛋白菌株并进行工艺优化及酶学性质研究。先通过单因素、Placket-Burman(PB)和正交优化试验对筛选菌株虾壳脱蛋白工艺优化,进一步对酶学性质和降解产物进行研究。结果表明,菌株铜绿假单胞菌(Pseudomonas aeruginosa)Gxun-7脱蛋白效果最好;最优产酶条件为:虾壳粉40 g/L,玉米浆5 g/L,接种量1%(体积分数),初始pH 7.0,发酵温度35℃,发酵时间48 h,优化后酶活性达(617.13±22.11)U/mL,较优化前提高了43.50%,此时,虾壳脱蛋白率为(82.61±0.54)%;菌株Gxun-7所产蛋白酶为诱导酶,酶的耐盐性较好,最适温度和pH值分别为60℃和7.0,除Cu^(2+)和Al^(3+)对酶活性有显著抑制外,其他金属离子对酶活影响不大,十二烷基磺酸钠(sodium dodecyl sulfate,SDS)和十六烷基三甲基溴化铵(hexadecyl trimethyl ammonium bromide,CTAB)抑制酶活性超过40%,而β-巯基乙醇却能提高酶活性到468%;降解液中共检测出17种氨基酸,含量达1856.14 mg/L。因此,Gxun-7对虾壳具有高效脱蛋白能力,所产蛋白酶稳定性强,降解液中氨基酸含量丰富,为虾壳蛋白降解及利用提供理论依据。

滇产刺梨多糖的提取纯化及其结构分析

目的:探讨刺梨多糖提取和纯化的方法。方法:采用热水提取醇沉法从刺梨果实中提取多糖,在单因素实验的基础上,以响应面实验对刺梨多糖的提取工艺进行优化。采用Cellulose DEAE-52和Sephadex G-100柱对刺梨粗多糖进行分离纯化,Sevage法脱蛋白,D-101吸附树脂脱色素,FT-IR、HPGPC和HPLC测定分子量和单糖组成。结果:刺梨多糖是一种以Glc为主要成分的均一性酸性多糖。

白及叶多糖脱色脱蛋白质方法及其抗氧化活性研究

以水提醇沉法提取白及叶粗多糖,通过比较活性炭、H_(2)O_(2)、大孔吸附树脂法脱色,三氯乙酸、Sevage、盐析法脱蛋白质,筛选出白及叶精多糖的最佳制备方法,并对白及叶精多糖进行结构表征和抗氧化活性测定。结果表明:白及叶精多糖的最佳制备方法为以AB-8大孔吸附树脂法脱色,以三氯乙酸法脱蛋白质。结构表征结果显示,白及叶精多糖由9种单糖组成,以半乳糖、阿拉伯糖、甘露糖为主。抗氧化活性试验表明,白及叶精多糖具有一定的抗氧化活性。

蒲葵子粗多糖脱蛋白方法及其抑制破骨细胞分化活性

以蛋白质清除率和多糖保留率为指标,探讨Sevage法、酶法及两者相结合的方法对蒲葵子多糖脱蛋白的影响,并分析所得多糖对RANKL诱导RAW264.7破骨细胞分化的影响。Sevage法、酶法以及酶与Sevage结合的方法对蒲葵子多糖蛋白的脱除率依次为78.85%、82.40%、82.73%,多糖保留率依次为72.42%、92.16%、96.72%。用最佳的除蛋白方法获得的蒲葵子多糖处理RANKL诱导的RAW264.7破骨细胞模型,发现蒲葵子多糖可以减少破骨细胞生成数量,使得其TRAP活性降低。因此,酶与Sevage结合脱蛋白是相对有效的减少蒲葵子多糖中蛋白含量且多糖保留率较高的方法,所获得的蒲葵子多糖能抑制RANKL诱导RAW264.7向破骨细胞分化,为研发新的抗骨质疏松药物提供理论支撑。

小牛血去蛋白提取物眼用凝胶联合右旋糖酐羟丙甲纤维素滴眼液治疗干眼症的效果观察

目的观察小牛血去蛋白提取物眼用凝胶联合右旋糖酐羟丙甲纤维素滴眼液治疗干眼症的临床效果。方法将80例干眼症患者随机分为参照组(40例)和联合组(40例)。参照组采用右旋糖酐羟丙甲纤维素滴眼液治疗,联合组采用小牛血去蛋白提取物眼用凝胶联合右旋糖酐羟丙甲纤维素滴眼液治疗,均连续治疗2周。比较两组的临床疗效、泪膜稳定性指标及不良反应发生情况。结果联合组治疗总有效率为95.00%,高于参照组的80.00%(P<0.05)。治疗2周后,联合组BUT长于对照组,SIt值高于参照组,FL评分低于参照组(P<0.05)。治疗期间两组不良反应发生率比较无统计学差异(P>0.05)。结论小牛血去蛋白提取物眼用凝胶联合右旋糖酐羟丙甲纤维素滴眼液治疗干眼症可明显提升临床疗效,增强患者的泪膜稳定性,且安全可靠。

雪松松针多糖的醇沉、脱蛋白工艺及抗氧化活性研究

对雪松松针多糖的醇沉、脱蛋白工艺及其体外抗氧化活性进行研究。在单因素试验基础上,利用Box-Behnken模型对提取液浓缩比、乙醇体积分数和醇沉时间进行优化,比较多糖得率确定最佳雪松松针多糖醇沉工艺条件。以蛋白质清除率和多糖损失率为指标,比较了Sevage法和三氯醋酸(TCA)法的脱蛋白效果,并对试剂用量、脱蛋白次数进行了考察,然后利用DPPH和ABTS自由基法对纯化后多糖的抗氧化活性进行评价。研究结果表明:优化的雪松松针多糖一级醇沉条件为粗提液体积和松针干质量的比例(浓缩比)为3∶1(mL∶g,下同),乙醇体积分数为71%,醇沉温度为40℃,醇沉时间为10 h,在此条件下,雪松松针多糖得率为3.81%,结果与预测值接近。收集多糖后的上清液再按浓缩比1∶1浓缩,筛选得到二级醇沉的乙醇体积分数为80%。Sevage法脱蛋白效率优于TCA法,其最佳条件为Sevage试剂与多糖溶液的体积比为1∶1,脱除蛋白次数为3次,经UV法测得脱蛋白后的一级、二级醇沉多糖(以葡萄糖折算)质量分数分别为35.36%和36.62%。清除DPPH与ABTS自由基能力依次为Vc>二级醇沉多糖>BHT>一级醇沉多糖,纯化后的雪松松针80%醇沉多糖表现出良好的抗氧化活性。

小牛血去蛋白提取物滴眼液对糖尿病患者白内障术后角膜修复的疗效

目的:比较小牛血去蛋白提取物滴眼液与重组牛碱性成纤维细胞生长因子滴眼液对糖尿病患者白内障术后角膜修复的疗效差异。方法:选取2019年7月—2020年11月在汕头大学·香港中文大学联合汕头国际眼科中心接受白内障超声乳化摘除联合人工晶体植入术的合并2型糖尿病的白内障患者62例,随机分为试验组和对照组,每组31例(31眼)。试验组术后给予小牛血去蛋白提取物滴眼液促角膜修复,对照组术后给予重组牛碱性成纤维细胞生长因子滴眼液促角膜修复。所有患者术前1 d进行裸眼视力检查,术后1 d进行角膜荧光素染色和裸眼视力检查,术后1周、1个月、3个月进行角膜荧光素染色、泪膜破裂时间和裸眼视力检查。结果:治疗后两组患者的角膜荧光素染色评分均逐渐下降,组间差异无统计学意义(P>0.05),而不同时间点的角膜荧光素染色评分差异具有统计学意义(Waldχ^(2)=719.096,P<0.001)。术后1周,试验组和对照组患者泪膜破裂时间分别为(4.83±2.28)、(3.89±1.87)s;术后1个月分别为(5.86±2.48)、(4.60±1.97)s,术后3个月分别为(8.33±2.03)、(5.88±1.47)s,试验组泪膜破裂时间均长于对照组(P值均<0.05)。两组患者术后的裸眼视力均逐渐提高,组间差异无统计学意义(P>0.05)。结论:小牛血去蛋白提取物滴眼液与重组牛碱性成纤维细胞生长因子滴眼液治疗白内障术后角膜缺损的效果相当。在提高泪膜稳定性方面,小牛血去蛋白提取物滴眼液优于重组牛碱性成纤维细胞生长因子滴眼液。

刺糖多糖脱色脱蛋白工艺及抗氧化活性研究

为优化刺糖多糖脱色脱蛋白的最佳工艺,运用静动态吸附-解吸的方法,从8种极性不同的树脂中筛选最佳纯化效果的树脂,并通过单因素实验结合响应面法设计优化树脂的最佳纯化工艺。对比纯化前后多糖紫外、红外图谱特征及清除DPPH自由基的能力。结果表明XDA-1型树脂脱色脱蛋白的效果最佳,最优工艺条件为:上样质量浓度为0.03 g/mL,洗脱流速为2 mL/min,上样量为0.5 BV(1 BV=100 mL);在此条件下脱色率为(72.93±0.54)%,脱蛋白率为(74.72±0.37)%,多糖的保留率为(88.89±0.84)%;纯化后紫外谱图中蛋白质等杂质的特征吸收峰消失,多糖的红外特征吸收峰未发生变化,纯化后获得的刺糖多糖抗氧化活性增强。XDA-1型大孔吸附树脂可用于刺糖多糖的高效纯化,优选的脱色脱蛋白工艺条件稳定可行。