Inquiry of Water-Soluble Polysaccharide Extraction Conditions from Grapefruit Skin

Water-soluble polysaccharide was isolated from grapefruit with the method of water-dissolving and ethanol-precipitating. By single factor test and orthogonal experimental method, the extraction conditions of the water-soluble polysaccharide were investigated, which contained liquid-solid ratio, temperature, time and pH. The results showed that pH was the most important factor of polysaccharide extraction, followed by temperature. The optimized extraction technology conditions were obtained. The liquid-solid ratio was 1:40, temperature was 90?C, time was 2.0 h, and pH was 2. The highest extraction rate of crude polysaccharide was 8.30%.

Anti-colon cancer activity of water-soluble polysaccharides extracted from Gloeostereum incarnatum via Wnt/β-catenin signaling pathway

The incidence rate of colon cancer ranks the third among malignant tumors worldwide.Gloeostereum incarnatum(GI),a fungus with homology of medicine and food,has multiple pharmacological activities.It was investigated in this study that the anti-colon cancer effect of polysaccharides purifi ed from GI(GIPS)in ApcMinC/Gpt mice(an in situ colon cancer mouse model).Eight-week administration with GIPS at doses of 30 or 90 mg/kg strongly inhibited tumor growth including the reduction on numbers and the suppression of the size without infl uencing the animals’body weight and organ functions.According to the proteomics performing by antibody array,among 308 detected cytokines,GIPS significantly regulated 89 of them.Compared with vehicle-treated mice,GIPS effectively reduced the levels of interleukin(IL)-1β,IL-4,IL-6,IL-17,IL-22,tumor necrosis factor(TNF)-α,matrix metalloproteinase(MMP)-2,and enhanced the levels of IL-15 and IL-18 in serum and/or colon tissues,which suggested its anti-inflammation of GIPS.GIPS suppressed nuclear aggregation of β-catenin,affected the expression of WNT1 and related proteins,thereby regulated the activation of the Wnt signaling.Altogether,GIPS can inhibit the growth of colon cancer,at least partially,via inhibiting the Wnt/β-catenin signaling pathway.

Bioassay-Guided Extraction of Crude Fucose-Containing Sulphated Polysaccharides from Sargassum fusiforme with Response Surface Methodology

The response surface methodology(RSM) combined with bioassays was employed to optimize the extraction process of crude fucose-containing sulphated polysaccharides(c FCSP) from Sargassum fusiforme. The central composite design(CCD) was used with four variables, five levels, and four responses. The four variables were p H value of hydrochloric acid solution, extraction temperature(℃), ratio of liquid to raw material(m L g^(-1)), and extraction time(h), respectively. Chemical and bioassay indices were used in combination as the response parameters, which included the yield of c FCSP, fucose content, proliferation rate of spleen cells, and lipopolysaccharide-induced proliferation of splenocytes. The experimental data were fitted to a second-order polynomial equation using multiple regression analysis, and examined using the appropriate statistical methods. The best extraction conditions were as follows: the p H value of hydrochloric acid solution was 3.50; the extraction temperature was 100℃; the ratio of liquid to raw material was 15.00 m L g^(-1) and the extraction time was 2.50 h. The experimental yield was close to the predicted from the model. The extract could promote spleen lymphocyte proliferation, especially the lipopolysaccharide-induced lymphocyte proliferation in vitro, which suggested that its immunomodulatory effect on B lymphocytes. Therefore, c FCSP extracted from S. fusiforme could be utilized as an immunostimulant in functional foods and pharmaceutical industry in future.

Anticancer Effect of Ginseng Leaves Crude Polysaccharides on Human Hepatoma Cell SMMC-7721

Background: Polysaccharides extracted from the medicinal herbs are known to possess antitumor effects. Although there is a significant number of evidences implicated on the beneficial effects of the ginseng leaves ginsenoside with diverse associated mechanisms, reports on the anticancer by the ginseng leaves crude polysaccharides (GLCP) are not sufficient. Experiments were carried out to unravel the anticancer effects of GLCP. Methods: Cells were treated with GLCP (0.5 - 2 mg/ml) for 48h. MTT method was used to detect the cell viability. Western blot and flow cytometry were used to detect apoptotic rate. Western blot and acridine orange staining were used to detect the cell autophagy. Results: Compared with the normal human liver cell (Chang liver), GLCP (1.5 - 2 mg/ml) significantly reduction cell viability, promote apoptosis-related proteins expression, promote cell apoptosis and autophagy in SMMC-7721 cells. But caveolin-1 gene silencing could inhibit the anticancer effect of GLCP. Conclusions: These data suggest that GLCP promote autophagy and apoptosis in human hepatoma cell SMMC-7721. We speculate that its mechanism may be associated with the caveolin-1 which is an essential structural molecule of caveolae. Although the effect of GLCP inhibited of liver cancer is not very strong, we are more interested in the GLCP which plays a tumor suppressor role in health care.

Extraction and Antioxidant Activity Analysis of Crude Polysaccharides from Wild Lactarius volemus Fr. in Yunnan Province

[ Objective ] This study aimed to investigate the optimal extraction process of crude polysaccharides from wild Lactarius volemus Fr. in Yunnan Province and preliminarily analyzed its antioxidant activity in vitro. [ Method ] With water extraction and alcohol precipitation method, the optimal conditions for extracting crude polysaccharides from wild L. volemus Ft. were screened by single-factor and orthogonal experiments. The antioxidant activity of the extracted crude polysac- charides was determined with DPPH assay. [ Result ] The optimal conditions for pigment removal with activated carbon were： activated carbon amount of 20 g/L, water bath time of 40 min, water bath temperature of40 ℃ ; the optimal conditions for extracting crude polysaccharides from wild L. vo/emus Fr. with hot water ex- traction method were： hot water extraction time of 3 h, solid-liquid ratio of 1： 45, extraction frequency of twice. Under the optimized extraction conditions, the yield of crude polysaccharides was 21.33 mg/g. In addition, the antioxidant activity of 0. 665 mg/ml crude polysaccharides was 52.46% ; the amount of crude polysac- eharides was proportional to the antioxidant activity. [ Conclusion] Hot water extraction method can be used as a high-efficiency extraction technology of crude pol- ysaecharides from wild L. volemus Fr. with simple operation and low costs. Crude polysaccharides extracted from L. volemus Ft. exhibited certain antioxidant activi- ty in vitro.

Crude Polysaccharide and Triterpene Content of Ganoderma Fruit Bodies at Different Stages of Development

Crude polysaccharide and triterpene levels were determined in the fruit bodies of eleven Lingzhi samples,designated as Ganoderma lucidum,G.capense and G.tsugae,harvested at four different stages of development: budding,elongation,maturation and senescence.In most cases,crude polysaccharide levels were highest at the budding stage,decreased during the elongation stage,increased again at maturation and were lowest at senescence.Triterpene levels generally remained relatively high during the first three developmental stages but were markedly lower at senescence.

Effects of Compound Phellinus igniarius(L.ex Fr.)Quel. Oral Liquid's Polysaccharide on the Immunologic Function of Mice

In this paper, the effects of compound P. igniarius oral liquid’s crude polysaccharide on the immunologic function of mice were studied from four aspects, namely, carbon clearance test of mice, macrophage phagocytosis of chicken red blood cel s in the enterocoelia of mice （semi-in vivo method）, the ratio of organ to body weight, natural kil er （NK） cel activity in mice （the determination of lactate de-hydrogenase assay）. The results showed that high-dosage group（40 mL/kg） of com-pound P. igniarius oral liquid can obviously enhance the ability of carbon clearance of mice; middle-（20 mL/kg） and high-dosage groups can significantly enhance the phagocytic rate and phagocytic index of chicken erythrocyte of mouse macrophage;low-（10 mL/kg）, middle- and high-dosage groups can significantly enhance NK cel activity of mice. These showed that compound P. igniarius oral liquid can enhance mononuclear-macrophage and NK cel activity. In conclusion, compound P. igniarius oral liquid’s polysaccharide can enhance immunologic function and significantly im-prove the specific and nonspecific immunologic function.

Preparation and characterization of controlled-release fertilizers coated with marine polysaccharide derivatives

Encapsulation of water-soluble nitrogen fertilizers by membranes can be used to control the release of nutrients to maximize the fertilization ef fect and reduce environmental pollution.In this research,we formulated a new double-coated controlled-release fertilizer(CRF)by using food-grade microcrystalline wax(MW)and marine polysaccharide derivatives(calcium alginate and chitosan-glutaraldehyde copolymer).The pellets of water-soluble nitrogen fertilizer were coated with the marine polysaccharide derivatives and MW.A convenient and eco-friendly method was used to prepare the CRF.Scanning electron microscopy(SEM)and Fourier transform infrared spectroscopy(FTIR)were used to characterize the morphology and composition of the products.The nitrogen-release properties were determined in water using UV-Vis spectrophotometry.The controlled-release properties of the fertilizer were improved dramatically after coating with MW and the marine polysaccharide derivatives.The results show that the double-coated CRFs can release nitrogen in a controlled manner,have excellent controlled-release features,and meet the European Standard for CRFs.

扛板归粗多糖抗氧化、抗炎、镇痛和抑菌活性研究

目的:研究扛板归粗多糖体内外抗氧化、抗炎、镇痛和抑菌活性。方法:水提醇沉法制备扛板归粗多糖。以清除1,1-二苯基-2-三硝基苯肼(1,1-Diphenyl-2-picrylhydrazyl,DPPH)自由基、羟自由基和超氧阴离子自由基的能力为体外抗氧化评价方法,以测定总超氧化物歧化酶(Total superoxide dismutase,T-SOD)活力、过氧化氢酶(Catalase,CAT)活力和丙二醛(Malondialdehyde,MDA)含量为体内抗氧化指标,综合考察粗多糖抗氧化活性;采用二甲苯诱导小鼠耳廓肿胀法,评价粗多糖抗炎效果;测定小鼠热板痛阈值评价粗多糖镇痛作用;采用牛津杯法评价粗多糖体外抑菌效果。结果:扛板归粗多糖对DPPH自由基、羟自由基和超氧阴离子自由基具有较好的清除能力,呈剂量依懒性,半抑制浓度值(IC_(50))分别为420.93、171.53和575.40μg/mL;与对照组相比,粗多糖在体内能提高组织T-SOD活力和CAT活力,降低MDA水平。粗多糖能抑制二甲苯诱导的肿胀作用,抑制率高达40.95%。但是,该粗多糖镇痛作用不明显,对大肠埃希氏菌和金黄色葡萄球菌均无抑制作用。结论:扛板归粗多糖具有抗氧化和抗炎活性,有望开发成天然抗氧化剂。

破壁前后灵芝孢子粗多糖含量、结构及单糖组成对比分析

为明确破壁对灵芝孢子粗多糖含量、结构及单糖组成的影响,以灵芝粗多糖提取含量为指标,对灵芝粗多糖的提取工艺进行优化,获得灵芝孢子粗多糖超声辅助水提取的最佳工艺参数为超声温度55℃、超声时间8 h,此工艺条件下从破壁灵芝孢子粉中提取的粗多糖含量为(15.873±0.746)mg/g。采用最佳提取工艺条件提取破壁前后灵芝孢子粗多糖,对比其灵芝孢子粗多糖含量、纯度、DPPH自由基清除率以及单糖组成和多糖结构,结果显示破壁处理后灵芝孢子粗多糖含量提高233.396%,但其纯度下降了19.898%;破壁后灵芝孢子多糖DPPH自由基清除率也有较大提升;破壁处理对灵芝孢子多糖的单糖组成种类没有明显改变,但在单糖含量上存在显著性差异,特别是岩藻糖、半乳糖和甘露糖;红外光谱结果显示破壁前后灵芝孢子粉提取的灵芝孢子粗多糖在结构、组成上无明显差异,均是含有D⁃吡喃葡萄糖环的多糖。

无花果粗多糖提取工艺及抗氧化活性研究

本文以冻干无花果为原料,采用超声波辅助法提取粗多糖类物质,探讨提取溶剂、超声功率、提取温度和提取时间对无花果粗多糖提取率的影响,确定最佳提取参数,并通过DPPH自由基清除实验和总抗氧化能力测定评估无花果粗多糖的抗氧化活性。结果表明,以去离子水为提取剂,在超声功率为300 W、提取温度为75℃,提取时间为50 min的条件下,无花果多糖提取率最大。抗氧化活性实验结果表明,无花果粗多糖对DPPH自由基有明显的清除作用。

5种中药粗多糖水凝胶的制备及其促伤口愈合能力研究

以黄药子、红景天、鸡血藤、鱼腥草、一支箭5种中药为原料,采用水提醇沉法提取其中的粗多糖,测定其总多糖含量及体外抗氧化活性;将中药粗多糖载入壳聚糖中制备中药粗多糖水凝胶,并对所得水凝胶的微观结构、溶胀性能、保水性能、抗氧化活性、血液相容性及其促进伤口愈合能力等进行研究。结果表明:红景天粗多糖的总多糖含量最高,达到77.6%;各粗多糖溶液均有一定的抗氧化能力,其中对ABTS^(+)自由基、DPPH自由基、·OH自由基的清除能力及总还原力最强的粗多糖溶液分别为黄药子粗多糖溶液、黄药子粗多糖溶液、一支箭多糖溶液和红景天粗多糖溶液。随着中药粗多糖的载入,中药粗多糖水凝胶的孔径增大、溶胀性能增强,但保水率和抗氧化活性均有所降低;在2000μg/mL质量浓度下,各粗多糖水凝胶均展现出良好的血液相容性;相较于空白组,黄药子粗多糖水凝胶组和鱼腥草粗多糖水凝胶组的小鼠伤口愈合更明显,结痂现象减少,且观察到毛囊、皮脂腺等皮肤附属器的形成,未见明显的炎性细胞浸润。因此,黄药子粗多糖水凝胶和鱼腥草粗多糖水凝胶在加速伤口恢复方面均效果明显,显示出其作为伤口敷料的巨大应用潜力。

柳芽粗多糖超声辅助提取工艺优化及抗氧化活性分析

为了优化柳芽粗多糖(crude polysaccharide of willow bud,CPW)提取工艺并考察其体外抗氧化活性,试验采用超声辅助水提醇沉法提取柳芽粗多糖,并运用响应面分析法进行优化;以维生素C(vitamin C,VC)为对照,通过比色法检测其总抗氧化能力、清除1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基(DPPH·)以及抑制超氧阴离子自由基(O_(2)^(-)·)和羟自由基(·OH)的能力,评价CPW体外抗氧化效果。结果表明:CPW最佳提取工艺为液料比70∶1(mL/g),水浴温度56℃,超声功率440 W;采用该提取工艺对CPW的提取率达到6.6%。不同浓度CPW能够有效清除DPPH·和抑制·OH和O_(2)^(-)·的产生。说明优化的CPW超声辅助提取工艺切实可行,且所提取的CPW抗氧化能力较好。

海巴戟果实多糖的体外抗肿瘤活性研究

【目的】明确海巴戟果实多糖的抗肿瘤活性,为深入研究海巴戟果实多糖生物活性及其开发利用提供科学依据。【方法】采用噻唑蓝比色(MTT)法检测海巴戟果实粗多糖和纯化多糖对人正常结肠上皮细胞的毒性,并鉴定多糖对人结肠癌细胞SW620和HCT-116、宫颈癌细胞Hela、肝癌细胞QGY-7703增殖生长的影响,通过统计癌细胞的凋亡和坏死频率评估纯化多糖的体外抗肿瘤效果。【结果】海巴戟果实多糖无毒,较低浓度(62.5~125μg/mL)的粗多糖或较高浓度(125~2000μg/mL)的纯化多糖对人正常结肠上皮细胞增殖有促进作用。海巴戟果实多糖对宫颈癌细胞Hela的抑制作用较强,粗多糖和纯化多糖均在125~2000μg/mL浓度范围内显著抑制宫颈癌细胞Hela的增殖生长(P<0.05,下同),粗多糖和纯化多糖对宫颈癌细胞Hela的半抑制浓度(IC_(50))分别为542.80和1546.00μg/mL。海巴戟果实多糖对结肠癌细胞HCT-116的增殖生长也有较强抑制作用,但对肝癌细胞QGY-7703的增殖无明显抑制作用。海巴戟果实粗多糖浓度为1000μg/mL时对结肠癌细胞HCT-116和宫颈癌细胞Hela的抑制作用最强,细胞增殖率分别为78.11%和81.85%;纯化多糖浓度为2000μg/mL时对结肠癌细胞HCT-116和宫颈癌细胞Hela的抑制作用最强,细胞增殖率分别为57.05%和68.64%;纯化多糖对癌细胞生长的抑制能力整体上高于粗多糖。纯化多糖对结肠癌细胞HCT-116和宫颈癌细胞Hela的凋亡及坏死频率均有显著影响,且2种癌细胞的坏死频率均随纯化多糖浓度的增加而升高,于2000μg/mL浓度时达峰值,坏死频率分别为2.83%和6.75%。【结论】海巴戟果实多糖具有良好的抗肿瘤活性,纯化多糖比粗多糖的抗肿瘤活性更强。

干酪乳杆菌发酵豆粉粗多糖结构特征与抗氧化活性

制备8种干酪乳杆菌发酵豆粉粗多糖样品,比较其粗多糖得率、结构特征和抗氧化活性的差异。结果表明:发酵豆粉粗多糖得率为1.07%~11.42%,其中发酵红豆粉粗多糖得率最高(11.42%)。发酵豆粉粗多糖中均含有糖醛酸结构,其中发酵菜豆粉粗多糖中糖醛酸含量最高(7.46%)。发酵豆粉粗多糖分子质量为0.35~36.67 ku,其中发酵绿豆粉粗多糖含有的多糖分子种类最多。发酵豆粉粗多糖由甘露糖、葡萄糖醛酸、葡萄糖、半乳糖、木糖和阿拉伯糖以不同含量组成。发酵豆粉粗多糖表观形态呈片状松散状态且形状不规则,其中发酵绿豆粉粗多糖表现出最疏松程度。红外光谱显示8种发酵豆粉粗多糖均符合多糖化合物的特征吸收。8种发酵豆粉粗多糖表现出不同的抗氧化活性:发酵扁豆粉和发酵绿豆粉粗多糖清除DPPH的IC50值分别为0.07 mg/mL和0.98 mg/mL,发酵扁豆粉粗多糖清除效果最好;发酵绿豆粉粗多糖清除ABTS+的能力最好,其IC50值为0.67 mg/mL;发酵绿豆粉粗多糖对铁离子也表现出最高的还原能力。比较8种发酵豆粉粗多糖,发酵绿豆粉粗多糖表现出最佳的抗氧化活性。研究结果对干酪乳杆菌发酵制备不同豆粉食品的营养评价提供了理论依据。

广东虫草富硒培养及其粗多糖抗氧化活性的比较

该研究对不同外源硒(Na_(2)SeO_(3))质量浓度下培养得到的广东虫草子实体生长状况及腺苷(Adenosine,AD)、多糖(Polysaccharide,PS)、虫草酸(Cordycepic Acid,CA)等活性成分进行了考察,确定广东虫草菌株的最佳富硒质量浓度,同时检测了其子实体在最佳富硒质量浓度下的总硒含量及其存在形态,并对其粗多糖体外抗氧化活性进行了初步探究。结果表明,随着培养基中Na_(2)SeO_(3)质量浓度的增加,富硒广东虫草子实体的生物学转化率、AD、PS、CA含量均表现出先升后降的趋势。在Na_(2)SeO_(3)质量浓度为30 mg/kg时,生物学转化率、AD、PS均达到最高值,为最佳富硒质量浓度。此时,广东虫草子实体中的有机硒占比为100%,有7种硒形态,分别为硒代蛋氨酸(Selenomethionine,SeMet)、硒代胱氨酸(Selenocystine,SeCys_(2))、四价Se(IV)、硒甲基硒代半胱氨酸(Se-methylselenocysteine,SeMeCys)、六价Se(VI)以及两种未知硒形态。体外抗氧化活性评估表明,同一质量浓度下,相比未富硒广东虫草粗多糖(Cordyceps guangdongensis Crude Polysaccharide,CPS),富硒广东虫草粗多糖(Se-enriched Cordyceps guangdongensis Crude Polysaccharide,CPS-Se)具有更高的抗氧化活性,其对DPPH、ABTS+和羟基自由基的清除能力、总还原能力以及总抗氧化能力均有不同程度地增强(P<0.01),呈现良好的剂量依赖性。这为富硒广东虫草产品开发及其多糖的进一步纯化鉴定和活性验证提供了理论依据。

基于高产胞外粗多糖的白灵芝发酵茶培养基配方优化

为探究白灵芝在液体茶基质上分泌胞外粗多糖的最佳营养条件及其影响因素,本研究在单因素实验的基础上,通过正交试验和方差分析,优化了该菇在茶培养基上胞外粗多糖形成的营养条件,并采用相关性与通径分析,探究了其液体培养特性与胞外粗多糖分泌的关系。结果表明,在马铃薯50 g/L、葡萄糖40 g/L、红土3 g/L、普洱茶20 g/L、茶粉颗粒大小0.075 mm的茶培养基上,白灵芝的胞外粗多糖产量最高(1.49±0.33 g/L)且受各营养条件的影响顺序为葡萄糖>茶叶种类>红土>马铃薯>茶粉颗粒大小。此外,该菇胞外粗多糖的分泌受发酵液可溶性固形物、菌球数量的影响显著,其中前者对其间接影响最大,后者对其直接作用与综合作用最大。总之,茶培养基的营养条件(种类、浓度、颗粒大小等)与白灵芝的液体培养特性对其胞外粗多糖的分泌影响较大且存在交互作用,上述结果可为该菇多糖的提取及功能性食品的开发提供理论参考。

复合食用菌粗多糖对环磷酰胺诱导的免疫抑制小鼠的调节作用

该研究旨在探讨复合食用菌粗多糖对免疫抑制小鼠的调节作用。试验将100只昆明小鼠随机分为5组:空白对照组(NC组),模型对照组(MC组),复合粗多糖低、中、高剂量组CPL 100:1、CPM 200:1、CPH400:1(mg:kg),试验前4 d,除NC组外其余各组小鼠均每天腹腔注射剂量为60:1(mg:kg)环磷酰胺。造模后各组小鼠连续灌胃16 d(1次/d),NC、MC组灌胃生理盐水,其余三组灌胃低、中、高三个浓度的复合粗多糖。测定小鼠体重、脏器指数、外周血白细胞计数、脾淋巴细胞增殖、病理学切片、肝脏氧化应激酶、丙二醛(MDA)、总抗氧化能力(T-AOC)、血清细胞因子及一氧化氮(NO)等指标。结果显示:造模期间,除NC组外,其余各组小鼠体重出现急剧下降;灌胃试验后,复合粗多糖组小鼠体重逐渐恢复并趋于NC组。与NC组相比,MC组小鼠脏器指数显著性下降,出现脾脏红髓和白髓界限不清;肝细胞水肿,形态排列混乱等现象;肝脏中SOD、CAT、T-AOC;血液中白细胞水平,血清中NO、TNF-α、IL-2、IL-6,脾淋巴细胞增殖均显著性降低(P<0.05),MDA显著升高(P<0.05),复合粗多糖CPH组上述指标与MC组相比显著升高(P<0.05),MDA显著降低(P<0.05)。通过以上试验结果,验证了复合粗多糖具有良好的免疫调节作用。

采摘时间对甘肃庆阳产区酸枣仁品质的影响

酸枣仁是苁蓉补肾丸、人参归脾丸、补脑丸等几十种中成药的重要原料,随着酸枣的市场需求量逐年攀升其收购价也逐年上涨。但酸枣多野生,资源有限,甘肃庆阳地区出现“抢青”采摘、毁柱采摘等现象,不利于酸枣资源的可持续发展。为了分析采摘时间对酸枣仁品质的影响,于2023年9月8日至10月20日收集了甘肃庆阳产区不同采摘时间的酸枣仁,检测了其中油脂、总黄酮、总皂苷、粗多糖成分的含量。结果表明,“抢青”采摘导致酸枣仁油脂、总黄酮、总皂苷、粗多糖成分的含量都严重偏低,酸枣仁品质下降,10月初甘肃庆阳产区的酸枣仁功效成分含量基本稳定,建议庆阳地区对酸枣采收时间进行干预,将酸枣采收时间控制在10月左右。

复方健脾养胃方提取工艺的优化及纯化工艺的优选

本研究在单因素实验基础上采用正交试验优化,考察提取温度、提取时间和液料比对复方健脾养胃方中粗多糖提取率的影响,并考察纯化工艺对粗多糖保留率、浊度和感官评价的影响。结果表明,复方健脾养胃方中粗多糖的提取最优工艺为:95℃水浸提,液料比12∶1mL/g,提取时间2h,提取2次。优选的纯化工艺为:先将水提取液浓缩至相对密度为1.05~1.10(65℃),8000r/min离心20min后用孔径为0.45μm滤袋过滤,过滤液中粗多糖保留率为90.10%,浊度为31.4NTU,液体澄清透明,水提液稳定性好。