A novel diarylheptanoid bearing flavonol moiety from the rhizomes of Alpinia officinarum Hance

A novel diarylheptanoid bearing flavonol moiety,named officinin A(1),along with two known compounds galangin and kaempferide were isolated from the rhizomes of Alpina officinarum Hance.The structure elucidation was accomplished by HRESI -MS,1D and 2D NMR methods.

Anti-inflammatory activity of Alpinia officinarum hance on rat colon inflammation and tissue damage in DSS induced acute and chronic colitis models

The purpose of this study was to investigate the possible prophylactic effects of Alpinia officinarum hance on experimentally induced acute and chronic colitis models,in-vivo and in-vitro.Acute and chronic colitis were induced in Male Wistar rats by administration of Dextran Sulfate Sodium(DSS)in drinking water.DSS induction exhibited colon shrinkage,increased the Disease Activity Index(DAI)score,increased the levels of inflammatory markers and caused severe anemia.DSS induced animals,co-treated with the hexane extract of Alpinia officinarum(HEAO)(200 mg/kg body wt),effectively suppressed colonic injury that was evidenced by the reduced DAI score,colon weight/length ratio,histological damage,proinflammatory markers and MPO activity.Further,it restored the colonic antioxidants near to normal levels by regulating the oxidative stress via attenuation of lipid peroxidation.Our results revealed that the degree of colitis caused by the administration of DSS was significantly attenuated by HEAO.In addition,the in-vitro study showed that HEAO treatment inhibited the proliferation of HT-29 cells and down regulated the mRNA expression of NF-B and COX-2.Taken together,these results suggest that HEAO is a promising anti-oxidant and anti-inflammatory agent that support its possible therapeutic role in the treatment of colitis.

Herb-drug interaction in the protective effect of Alpinia officinarum against gastric injury induced by indomethacin based on pharmacokinetic, tissue distribution and excretion studies in rats

Alpinia officinarum Hance of the Chinese traditional herb for the treatment of emesis, abdominal pain and diarrhea has been used to counteract gastric disease induced by indomethacin in rats without obvious side effects. However, the role of herb-drug interaction between indomethacin and A. officinarum based on pharmacokinetic, tissue distribution and excretion still remains unknown. In this study, an ultra-fast liquid-tandem mass spectrometry(UFLC-MS/MS) method was developed for simultaneous determination of indomethacin and its three metabolites, O-desmethylindomethacin(ODI), deschlorobenzoylindomethacin(NDI) and indomethacin acyl-b-D-glucuronide(IDAbG) by oral administration of indomethacin solution with and without the ethanolic extract of A. officinarum and applied to comparative pharmacokinetic, tissue distribution and excretion studies. Our results clarified that oral administration of A. officinarum produced significant alterations in the pharmacokinetic parameters of indomethacin. And the pharmacokinetic interaction between indomethacin and A. officinarum reduced the systemic exposure of indomethacin and increased its elimination. Tissue distribution results demonstrated that co-administration of A. Officinarum could not reduce the accumulation of indomethacin in the target tissue of the stomach, but could accelerate the excretions of indomethacin and its three metabolites including ODI, NDI and IDAb G in the bile and feces of rats in the excretion study.Therefore, A. Officinarum might have a gastrointestinal protective effect through the interaction role with indomethacin based on the pharmacokinetics and excretion in rats.

The effect of characteristic Li-medicine Alpinia officinarum Hance on improving insulin resistance

Objective:To study the effects of characteristic Li-medicine Alpinia officinarum Hance on improving insulin resistance(IR),and provide scientific evidence for the adjuvant treatment T2DM.Methods:CCK8 kit was used to detect the viability of HepG2 cells with 0-200μg/mL Alpinia officinarum Hance extract(AOE)and 0-100μmol/L galangin,and determine the administration concentration.The IR model was established by inducing HepG2 cells with high glucose for 48 hours,and rosiglitazone(ROSI)was used as the positive control drug.Furthermore,we detected intracellular and extracellular glucose contents in IR-HepG2 cells after dosing AOE and galangin by flow cytometry and glucose detection kit,and evaluated the effect of regulating glucose metabolism and IR.Western blot was used to detect the effects of AOE and galangin on the expression of glucose transporter-4(GLUT4)in IR-HepG2 cells.Results:CCK8 kit test result showed that 0-200μg/mL AOE and 0-50μmol/L galangin had no significant effect on HepG2 cell viability.The results of flow cytometry and glucose detection kit showed that the glucose uptake and consumption of the IR model group induced by high glucose was significantly lower than that of the blank group,and thus the IR model was successfully established.Both 50μg/mL AOE and 10,20μmol/L galangin significantly increased the glucose uptake and consumption of IR-HepG2 cells(P<0.05);Western blot experiment showed that AOE and galangin significantly increased GLUT4 level of IR-HepG2 cells(P<0.01).Conclusion:Alpinia officinarum Hance could promote the uptake and consumption of glucose in IR-HepG2 cells by up-regulating the expression of GLUT4 protein,thereby improving IR and enhancing insulin sensitivity.

Effect of Alpinia officinarum Hance alcohol extracts on primary dysmenorrheal

Objective:To study the effect of Alpinia officinarum Hance(A.officinarum) 80% alcohol extract on the primary dysmenorrhea.Methods:A.officinarum 80% alcohol extract were enriched by macroporous adsorption resins.Female mice of primary dysmenorrhea model were established by oxytocin induction; the effects of A.officinarum 80% alcohol extract on primary dysmenorrhea were observed by body twist method; and the homogenate level of prostaglandin F_(2α)(PGF_(2α)),prostaglandin E_2(PGE_2) and Ca^(2+) in the uterus were observed in oxytocin-induced female mice.Results:The writhing frequency of primary dysmenorrhea mice was significantly decreased after treatment of A.officinarum 80% alcohol extract and the level of PGF_(2α),PGE_2 and Ca^(2+) in mice uterus was significantly decreased(P<0.05,P<0.01) in groups of mice treated with middle and high dosage of A.officinarum 80% alcohol extract compared with that of model group.Conclusions:These findings suggest that A.Officinarum 80% alcohol extract can significantly relieve primary dysmenorrhea.

Alpinia officinarum Hance extract alleviates particulate matter-induced lung injury in mice

Objective: To evaluate the effect of Alpinia officinarum Hance(A. officinarum) extract on lung injury caused by particulate matter(PM). Methods: The Kunming mice were intranasally instilled with PM and treated with A. officinarum extract for 3 weeks. Bronchoalveolar lavage fluid, blood and lung samples were collected for biochemical, serological and histopathological studies. Results: Serological analysis showed that albumin levels, lactate dehydrogenase and alkaline phosphatase activities in bronchoalveolar lavage fluid were significantly reduced after administrations of 50, 100 and 200 mg/kg of A. officinarum extracts to the PM injured mice. Markers of oxidative stress, nitric oxide, malondialdehyde levels and nitric oxide synthase activities, were significantly decreased. Correspondingly, total superoxide dismutase activity was improved dramatically. The expressions of interleukin-6 and tumor necrosis factor alpha were also down-regulated obviously. In addition, pathological sections of lung tissue showed that A. officinarum could reduce the infiltration of inflammatory cells, pulmonary edema and pulmonary fibrosis. These results showed that A. officinarum extract could alleviate PMinduced lung injury via reducing the permeability of cell membranes in lung tissue, eliminating oxidative stress and relieving inflammatory response.Conclusions: A. officinarum extract was an efficient treatment for PM-induced lung injury in mice, and it may be a promising therapeutic agent in future.

Chemical Composition, Proapoptotic and Antiosteoporosis Activities of the Essential Oil from the Aerial Part of <i>Alpinia officinarum</i>Hance

Background: Alpinia officinarum Hance is valued as an edible medicinal plant. The rhizome is widely reported to have anticancer activity whereas little information is available on the aerial part. This study investigates chemical composition, proapoptotic and anti-osteoporosis activities of essential oil from aerial parts of A. officinarum (APEO). Methods: In this study, APEO was extracted by hydrodistillation and analyzed using GC-MS. The inhibitive activity of 0 - 2.5 μL/mL. APEO was investigated using MTT assay, while in vivo effect was evaluated in nude mice. The cell cycle, apoptosis, Δψm and expression of proteins analyses influenced by 0 - 0.313 μL/mL APEO were detected by PI, Annexin V/PI, JC-1, and Western blot, respectively. Alkaline phosphatase activity and mineralized nodules formation of rat osteoblasts with 0 - 0.156 μL/mL APEO were assayed using colorimetric method and alizarin red staining, respectively. Results: Total 45 constituents were identified accounting for 91.1% of APEO (sesquiterpene hydrocarbons for 44.4%). APEO significantly inhibited cancer cells growth in a dose-dependent manner. APEO also inhibited cancer growth in vivo. The percentage of S phase cells is up to 64.846% with 0.313 μL/mL APEO. The proportion of total apoptotic cells significantly increased to 79.6% at 0.313 μL/mL concentration. APEO treated cells accompanied with Bcl-2 and Δψm decrease, and caspase-3 and p53 upregulation. Furthermore, addition of APEO in rat osteoblasts led to a dose-dependent increase in ALP activity and formation of mineralized bone nodules. Conclusions: Our data suggest that APEO could be developed as an agent against human lung cancer and osteoporosis, especially cancer-induced bone loss.

A new dimeric diarylheptanoid from the rhizomes of Alpinia officinarum

AIM: To study the chemical constituents of the rhizomes of Alpinia officinarum Hance. METHOD: Compounds were isolated by repeated column chromatography, and their structures were elucidated on the basis of spectral analysis. The cytotoxic activities of these compounds were evaluated with the T98G and B16F10 cell lines by the MTT assay. RESULTS: A dimeric diarylheptanoid, named alpinin B(1), along with three known diarylheptanoids were obtained, and their structures were identified as alpinin B(1), 1, 7-diphenyl-3,5-heptanedione(2),(4E)-1, 7-diphenylhept-4-en-3-one(3) and(4E)-7-(4-hydroxyphenyl)-1-phenylhept-4-en-3-one(4). CONCLUSION: Compound 1 is a new dimeric diarylheptanoid. The biosynthetic pathway of 1 was speculated to originate from a Michael reaction between compounds 2 and 3. Compound 3 showed cytotoxicity against the human glioblastoma T98G cell line with IC50 of 27 μmol L 1.

Chromatographic fingerprint analysis and quantitative evaluate the rhizomes of Alpinia officinarum Hance(lesser galangal)

The rhizome of Alpinia officinarum Hance is a well-known traditional Chinese medicine(TCM)and has been widely used for the remedy of gastrointestinal diseases.In the present study,a simple and rapid HPLC-DAD was developed for the quality control of the rhizomes of A.officinarum.Its chemical fingerprint was established using raw material of 15 different origins in China.Similarity analysis(SA)and hierarchical clusting analysis(HCA)were applied to select the qualitative markers.Principal components analysis(PCA)was conducted to select the quantitative markers of the rhizomes of A.officinarum samples from different origins.The constituents were confirmed by(+)electrospray ionization LC-MS.12 constituents were selected as common peaks and 10 of them were confirmed by(+)electrospray ionization LC-MS.Six bioactive constituents including DPHA,galangin flavanone,galangin,galangin 3-methylether,DPHB and DPHC were simultaneous determination by using the HPLC-DAD analysis.The developed method was able to determine the bioactive components with excellent resolution,precision and recovery.The results indicated that chromatographic fingerprint combination with multi-components determination method is suitable for quality assessment of the rhizomes of A.officinarum.

A novel dimeric diarylheptanoid from the rhizomes of Alpinia officinarum

A novel dimeric diarylheptanoid,named alpinin A（1）,along with two known compounds,1,7-diphenyl-5-ol-3-heptanone and 7- （4＇-hydroxy-3＇-methoxyphenyl）-l-phenyl-4-heptene-3-one,were isolated from the rhizomes of Alpinia officinarum Hance.The structure of compound 1 was elucidated on the basis of spectral analysis,including HR-IT-TOF-MS,1D and 2D NMR.And a possible biogenetic pathway had been proposed for 1.

Study on mechanism of two related Chinese herbs A.officinarum-Pogostemon in treatment of delayed emptying in diabetic gastroparesis based on network pharmacology

Objective:To explore the potential active components,therapeutic targets and critical path of Alpinia officinarum and Pogostemonis Herba in the treatment of diabetic gastroparesis(DGP)by using network pharmacology.Methods:The main chemical components and corresponding targets genes of A.officinarum-Pogostemonis Herba were screened through TCMSP database retrieval[oral bioavailability(OB)≥30%and drug like(DL)≥0.18].Tgenes of diabetic gastroparesis were screened by the Human Gene Database(GeneCards),and Venny 2.1 software was used to obtained common targets for the active ingredients of A.officinarum-Pogostemonis Herba and DGP.Then,the protein-protein interaction(PPI)network of the common targets was constructed by STRING database and analyzed to performed the core targets.GO function and KEGG pathway enrichment analysis of the common target genes were obtained by using ClusterProfiler R package.Finally,the network diagram of"active ingredient-pathway-target"was used to establish by Cytoscape 3.8 software.Results:Totally 23 ingredients of A.officinarum-Pogostemonis Herba,97 active ingredients targets and 533 DGP related targets,including 46 common targets were selected.The common targets were mainly enriched in the cell constituents such as the nuclear chromatin and mitochondria outer membrane,involved in the biological processes as oxidative stress,apoptosis signal regulation,and molecular functions as enzyme binding,protein phosphatase binding,and cytokine activity.They were also concentrated in the signal pathways such as PI3K/Akt,HIF-1 and MAPK.The network of“active ingredients-targets-pathways”indicated the active components such as quercetin,kaempferol and galangin in A.officinarum-Pogostemonis Herba played an anti-delayed gastric emptying in diabetic gastroparesis by acting on PTGS2,NOS2,BCL2,IL6,VEGFA and other targets to jointly regulate PI3K-Akt,HIF-1 and MAPK pathways.Conclusion:This study initially reveals that the combined treatment of A.officinarum-Pogostemonis Herba for delayed gastric emptying in diabetic gastroparesis is a complex process with multi-components,multi-targets and multi-pathways,and provides a new idea for followup researches.

Research and application of Alpinia officinarum in medicinal field

Alpinia officinarum is a medicinal plant and food. Its dried rhizome has been widely used for the relief of symptoms such as stomach aches, colds, ulcer and diarrhea for hundreds of years. Recent pharmacological studies showed it has anti-inflammatory, anti-oxidative, antidiabetic, anti-ulcer, anti-diarrhea, antiemetic,analgesia, anticoagulation, antitumor and antivitiligo effects. In this study, we summarized the current knowledge about its botanical resources, ethanopharmacological function, chemical constituents, pharmacologies and pharmacokinetics, safety and toxicity, and clinical application.

The Effective Activation of Apoptosis by AO-95 from the Aerial Part of Alpiniae officinarum in A549 Cell Line

The study was designed to examine the apoptosis inducing activity of the AO-95 from the aerial part ofAlpiniae officinarum. The AO-95 treatment to three human lung cancer cell lines （A549, NCI-H460 and NCI-H23） resulted in a dose-dependent inhibition of cell growth. The authors selected A549 cell line as a test model system. The AO-95 induced apoptosis ofA549 obviously, as shown by the results of cell cycle distribution analysis and cell apoptosis assay. Treatment of A549 with AO-95 markedly decreased the mitochondrial transmembrane potential （△ψm） suggesting AO-95-induced apoptosis may involve a mitochondrial-related pathway. Two compounds were isolated from AO-95 and their structures were identified as 3-phenylpropanal and 4-phenylbutan-2-one. Meanwhile, ten different components accounting for 98.38% of the total A0-95 composition were identified by gas chromatography-mass spectrometry. The major components were 3-phenylpropanal （33.09%） and 4-phenylbutan-2-one （51.16%）. And these two compounds showed notable cytotoxic activity with IC50 values of 14.90-78.46 μg/mL. In summary, the AO-95, dominated by phenylpropanoid constituents, shows effective apoptosis inducing activity by mitochondrial-related pathway and may be developed as an agent against human lung cancer.

基于Keap1/Nrf2/ARE信号通路探讨高良姜总黄酮对铅诱导HK-2细胞损伤的保护作用

目的 探讨高良姜总黄酮对铅(Pb)诱导人肾皮质近曲小管上皮细胞(HK-2)细胞损伤的保护作用。方法 体外培养HK-2细胞,MTT法检测不同质量浓度高良姜总黄酮和Pb对HK-2细胞活力的影响。设置对照组、高良姜总黄酮对照组、模型组和高良姜总黄酮组,除对照组和高良姜总黄酮对照组外各组均给予200μmol/L Pb诱导细胞损伤,同时高良姜总黄酮对照组和高良姜总黄酮组给予100μg/mL高良姜总黄酮干预24 h。通过Hoechst 33258荧光染色法联合annexin V-FITC/PI双标记流式细胞术检测细胞凋亡情况,荧光显微镜法观察Pb诱导及高良姜总黄酮干预对细胞内ROS水平的影响,试剂盒法检测细胞内氧化应激指标ROS、MDA、GSH水平和GSH-Px、CAT、SOD活性,ELISA法检测细胞培养上清液IL-1β、IL-6、TNF-α水平,Western bolt法检测细胞Keap1/Nrf2/HO-1信号通路相关蛋白及caspase-3蛋白表达。结果 与对照组比较,高良姜总黄酮(12.5~200μg/mL)对HK-2细胞活力没有显著影响。与模型组比较,高良姜总黄酮可减少Pb诱导HK-2细胞的凋亡(P<0.05),减轻细胞皱缩等细胞凋亡形态学变化,上调细胞内SOD、CAT、GSH-Px活性及GSH水平(P<0.05),降低细胞内MDA、ROS水平(P<0.05),上调Keap1/Nrf2/HO-1信号通路相关蛋白及caspase-3蛋白表达(P<0.05)。结论 高良姜总黄酮可能通过调控Keap1/Nrf2/ARE信号通路相关蛋白表达,对Pb诱导HK-2细胞损伤起保护作用。

高良姜-广藿香配伍溶液的质量标准研究

目的:建立高良姜-广藿香配伍溶液的质量标准。方法:针对高良姜-广藿香配伍溶液,高良姜素、广藿香酮2种指标性成分的薄层鉴别方法分别为:薄层板为硅胶G薄层板和高效硅胶G薄层板,展开剂为石油醚-乙酸乙酯(5∶3)、(5∶1);高良姜素、广藿香酮2种指标性成分高效液相色谱含量检测方法为:色谱柱为C18色谱柱(4.6 mm×250 mm,5μm)、流动相为甲醇(A)-0.2%磷酸(B)、检测波长:310 nm、梯度洗脱。结果:对于高良姜-广藿香配伍溶液中高良姜素、广藿香酮2种指标性成分,薄层鉴别主斑点清晰、阴性对照无干扰;2种指标性成分的浓度在10.00~1000.00μg/mL、10.00~640.00μg/mL范围内与峰面积线性关系系数分别为R^(2)=0.9990、R^(2)=0.9999;精密度RSD分别为0.63%、0.56%,稳定性RSD分别为1.82%、0.24%,重复性RSD分别为1.30%、0.89%;平均回收率分别为103.19%、100.87%(RSD为别为0.93%、0.4%,n=9);该2种指标性成分的含量应分别不低于233.71μg/mL、61.48μg/mL。结论:建立的方法可用于高良姜-广藿香配伍溶液的质量控制,该方法精密度、准确度、稳定性及重复性均符合要求。

响应面法优化3味山姜属中药挥发油提取工艺及总抗氧化能力研究

目的优化高良姜、大高良姜、红豆蔻3味山姜属中药的挥发油提取工艺,并研究其体外抗氧化能力。方法基于单因素实验结果,以3味山姜属中药挥发油得率为指标,料液比、浸泡时间、提取时间为考察因素,水蒸气蒸馏法为提取方法,采用Box-Behnken响应面法确定3味山姜属中药挥发油的最优提取条件;采用FRAP法与ABTS自由基清除法对3味山姜属中药挥发油进行体外总抗氧化能力测定。结果高良姜挥发油最优提取工艺为料液比1∶10.4,浸泡时间31 min,提取时间6.2 h;大高良姜挥发油最优提取工艺为料液比1∶12.4,浸泡时间84 min,提取时间7.3 h;红豆蔻挥发油最优提取工艺为料液比1∶12.3,浸泡时间90 min,提取时间6.5 h。相同浓度下,3味山姜属中药挥发油Fe3+还原能力排序为红豆蔻>大高良姜≈高良姜,Trolox当量总抗氧化能力排序为红豆蔻≈大高良姜>高良姜。结论Box-Behnken响应面法操作简便,优化结果直观,预测准确;所得3味山姜属中药挥发油提取最优工艺方案稳定性高,重复性好;3味山姜属中药挥发油具有较好的体外抗氧化活性。

基于“敲除策略”筛选高良姜乙酸乙酯部位抗幽门螺杆菌胃炎活性成分

目的筛选高良姜乙酸乙酯部位抗幽门螺杆菌胃炎活性成分。方法联合“敲除策略”与高效液相色谱(HPLC)检测对高良姜乙酸乙酯部位的组分(成分)进行分离,同时得到不含该组分(成分)的阴性样品;构建幽门螺杆菌感染人胃黏膜上皮细胞(GES-1)胃炎模型,采用酶联免疫吸附测定(ELISA)法检测细胞上清液中白细胞介素(IL)-6、肿瘤坏死因子-α(TNF-α)、IL-8和IL-1β水平。结果总黄酮组分、不含二苯基庚烷的阴性组分、不含5-羟基-7-(4-羟基-3-甲氧基)苯基-1-苯基-3-庚酮(DHPA)的阴性组分以及高良姜素(给药浓度8μg·mL^(-1)作用24 h),均能够显著降低幽门螺杆菌胃炎细胞上清液中IL-6水平;总黄酮组分浓度为16μg·mL^(-1)时可显著抑制幽门螺杆菌感染GES-1胃炎细胞IL-6、TNF-α、IL-8和IL-1β的释放。结论总黄酮组分是高良姜乙酸乙酯部位抗幽门螺杆菌胃炎的主要活性组分,该研究结果为进一步阐释高良姜抗幽门螺杆菌胃炎药效物质基础奠定了基础。

基于HPLC指纹图谱和网络药理学的高良姜质量标志物预测分析

目的:将指纹图谱与网络药理学相结合预测分析高良姜的质量标志物(Q-Marker)。方法:采用高效液相色谱法(HPLC)对高良姜进行成分分析,对20批高良姜提取物成分进行相似度评价、聚类分析和主成分分析,筛选高良姜提取物中Q-Marker候选成分;对筛选的Q-Marker候选成分进行靶点收集和网络药理学分析,构建“成分-靶点-通路”网络,并预测高良姜提取物的Q-Marker。结果:20批高良姜指纹图谱相似度集中在0.952~1.000范围,提示不同产地和批次的高良姜提取物整体组成上具有一致性;聚类分析和主成分分析显示海南的高良姜样品聚类趋势比较一致,云南、广东和广西的高良姜未按产地归类,不同产地的高良姜在成分上存在着差异,说明产地只是高良姜质量的影响因素之一。根据HPLC共有成分以及聚类分析和主要成分分析,得到2个Q-Marker候选成分,分别为高良姜素和槲皮素。经网络药理学分析筛选6个关键活性成分,6个关键要点和21条通路。结论:本研究初步预测槲皮素、山奈酚和高良姜素为高良姜的Q-Marker,为高良姜的质量控制予与参考,同时也为高良姜功效关联物质的研究及作用机制的阐释奠定了基础。

高良姜多糖的提取及其活性研究

采用水提醇沉和单因素实验获得较优的高良姜多糖提取方法。以对DPPH·自由基、超氧阴离子自由基的清除率为指标,评价高良姜多糖的抗氧化能力,同时研究其对酪氨酸酶抑制以及抗菌活性,探讨其在护肤品领域的潜在应用。获得高良姜多糖较优的提取方法为:提取温度为70℃、提取时间为40 min、料液比为1∶40(g/mL),此时多糖得率为11.62%,含量为20.0%。同时,研究发现高良姜多糖对DPPH·自由基和超氧阴离子自由基具有较强的清除率,均表现出质量浓度依赖性;研究发现高良姜多糖对酪氨酸酶具有较强的抑制活性,IC50值为2.69 mg/mL;此外,研究发现高良姜多糖对白色念珠菌和金黄色葡萄球菌具有较强的抑制作用。结果表明,高良姜多糖在护肤品方面具有较好的应用前景。

高良姜茎叶总黄酮超声提取工艺优化及生物活性研究

高良姜茎叶总黄酮是高良姜茎和叶子中所含的一类天然化合物,具有多种生物活性和药理作用。该研究通过单因素试验和正交试验优化了高良姜茎叶总黄酮微波提取工艺,研究结果表明,高良姜茎叶总黄酮提取的最佳加工工艺为超声时间40 min、超声功率750 W、乙醇体积分数60%、料液比1∶40和提取温度50℃,此时高良姜茎叶总黄酮提取量为107.23 mg/g;另外,对提纯前后的高良姜茎叶总黄酮还原能力和降血糖能力进行了测定,研究结果表明,高良姜茎叶总黄酮具有一定程度的还原能力和降血糖功效,且纯化后的高良姜茎叶总黄酮还原能力和降血糖功效明显强于纯化前。