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Evaluation of nutrient value of seabuckthorn in north China 被引量:8
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作者 Hu Jian-zhong Guo Xiao-feng 《Forestry Studies in China》 CAS 2006年第1期50-52,共3页
Five minerals or dements, crude protein, lysine, methionine+cystine, calcium and phosphorus, were selected for evaluation of the food value of seabuckthoru (Hippophae rhamnoides ssp. sinensis) using the method of ... Five minerals or dements, crude protein, lysine, methionine+cystine, calcium and phosphorus, were selected for evaluation of the food value of seabuckthoru (Hippophae rhamnoides ssp. sinensis) using the method of "food analysis". The decision values (δi) of seabuckthoru seeds, leaves and fruit residues rank in the fifth, sixth and ninth position among the 16 types of fodder. Seeds, leaves and fruit residues of seabuckthoru are suitable for livestock and poultry fodder. The weights of livestock and poultry are considerably increased after feeding with seabuckthoru. The development of seabuckthoru should have great potentials as food, pre-food and food additives for livestock and poultry in north China, Processing facilities should pay more attention to seabuckthoru food development methods and strategies and the seabuckthorn fodder industry should be promoted. 展开更多
关键词 seabuckthorn food analysis EVALUATION north China
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Deep eutectic solvents and alkaline extraction of protein from seabuckthorn seed meal: a comparison study 被引量:7
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作者 Junjie Lin Huan Xiang +2 位作者 Dongxiao Sun-Waterhouse Chun Cui Wei Wang 《Food Science and Human Wellness》 SCIE 2022年第4期1028-1035,共8页
Seabuckthorn seed meal(SSM) is a waste of oil extraction industry that rich in protein. In order to seek suitable protein extraction method, three different deep eutectic solvents(DESs)(including choline chlorideglyce... Seabuckthorn seed meal(SSM) is a waste of oil extraction industry that rich in protein. In order to seek suitable protein extraction method, three different deep eutectic solvents(DESs)(including choline chlorideglycerol, choline chloride-oxalic acid and choline chloride-urea) were developed for extracting protein from SSM and compared with alkaline. Result indicated that alkaline could effectively extract 56.9% protein from SSM and its protein content was 73.1%, higher than DES at 31.0%-41.4% and 64.3%-67.5%, respectively. However, compared to alkali, DES led to a product with less β-sheet, more β-turn, more essential amino acids, higher total amino acid content, especially choline chloride-urea which extracted protein showing an integrated and similar protein weight distribution compared to SSM. Also, this protein extracted chloride-urea showed a highest digestibility in vitro(by pepsin)(54.2%). These results indicated that choline chloride-urea extraction is better than alkaline extraction for SSM. 展开更多
关键词 seabuckthorn seed meal Protein extraction Deep eutectic solvent Alkaline extraction and acid precipitation Amino acids
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Seabuckthorn juice alleviates allergic symptoms in shrimp-induced food allergy mice 被引量:4
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作者 Hong Ren Xiaofan Zhu +6 位作者 Shiyu Zhai Xiaoping Feng Zhuomin Yan Jiao Sun Ye Liu Zhenpeng Gao Fangyu Long 《Food Science and Human Wellness》 SCIE CSCD 2023年第3期783-788,共6页
Tropomyosin(TM)in shrimp is one of the predominant causes of food allergy around the world.In the present study,the effect of seabuckthorn juice against TM-induced shrimp allergy was investigated in BALB/c mice.Allerg... Tropomyosin(TM)in shrimp is one of the predominant causes of food allergy around the world.In the present study,the effect of seabuckthorn juice against TM-induced shrimp allergy was investigated in BALB/c mice.Allergic symptoms,spleen index,intestinal section and diarrhea were measured in shrimp allergy mice.As the results,seabuckthorn juice suppressed the lesions in jejunum tissue,diarrhea and allergic symptoms in shrimp allergy mice.Seabuckthorn juice also reduced serum concentrations of tumor necrosis factor-a(TNF-α)as well as immunoglobulin E(IgE)and stimulated the secretion of interleukin-10(IL-10)in mice with shrimp allergy.Taken together,our findings suggest that increased IL-10 by seabuckthorn juice inhibits Th2 cytokine production to suppress shrimp allergic symptoms.Furthermore,seabuckthorn juice also regulates shrimp allergy by reducing jejunum lesions,inhibiting levels of TNF-αand IgE. 展开更多
关键词 SHRIMP seabuckthorn juice ALLERGY BALB/c mouse model
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Extracts from Chinese Seabuckthorn Berry Have Antimicrobial Activity in vitro 被引量:3
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作者 Ruojun DING Yang BI +1 位作者 Jixin LI Yumei JIANG 《Agricultural Science & Technology》 CAS 2016年第6期1277-1280,1284,共5页
Chinese seabuckthorn berry contains functional components. The berry was extracted by ethanol-water solution. MTT assay and growth rate method were applied to determine antibacterial ability in vitro of the extract so... Chinese seabuckthorn berry contains functional components. The berry was extracted by ethanol-water solution. MTT assay and growth rate method were applied to determine antibacterial ability in vitro of the extract solution. The antibacterial and antifungal assay indicated that the extract exhibited different degree of inhibitory activity. The result showed that the extract at a concentration of 1 250 mg/L had the maximum inhibitory effect against Escherichia coli, Bacillus subtilis, and Staphylococcus aureus. Inhibitory effect against B. subtilis was much larger than that against the other two bacterial species. MIC values(minimum inhibitory concentration) of the extract on three bacterial species were 5 000, 1 250, and 1 000 mg/L respectively. IC_(50)(50% inhibiting concentration) evaluation of Trichoderma viride, Rhizopus stolonifer, Aspergillus niger, Penicillium expansum, and Vintage Red indicated that the berry had the strongest inhibitory effect against P. expansum(5 520 mg/L), while it had the weakest inhibitory effect against R. stolonifer(18 870 mg/L). The results proved that seabuckthorn berry had highly effective and comprehensive antimicrobial function. 展开更多
关键词 Chinese seabuckthorn Antibacterial activity BACTERIA FUNGUS
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Demarcation of Seabuckthorn Plantations in Three Northern Areas of China 被引量:1
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作者 Hu Jian-zhong 《Forestry Studies in China》 CAS 2005年第4期41-48,共8页
Seabuckthorn (Hippophae rhamnoides) planting areas in the three northern areas (north, northeast and northwest) of China are divided into five planting zones: the semi-humid forest prairie climate zone for ecolog... Seabuckthorn (Hippophae rhamnoides) planting areas in the three northern areas (north, northeast and northwest) of China are divided into five planting zones: the semi-humid forest prairie climate zone for ecological and economic types of seabuckthorn plantations in the southern part of the Loess Plateau; the semi-arid steppe climate zone for similar types of plantations in the central part of the Loess Plateau; the arid desert steppe climate zone for ecological type of seabuckthorn plantations in the northern part of the Loess Plateau; the semi-arid and semi-humid steppe climate zone again for ecological and economic types of plantations in northern Hebei and western Liaoning and the cold humid steppe climate zone for economic types of plantations in the northern part of northeast China. The aim of this demarcation is to avoid a random introduction of seabuckthorn. In each of the five zones, objectives should be set and suitable seabuckthorn species, subspecies and varieties should be planted according to site conditions, seed sources and methods of tree breeding. The cultivation centers, bases, stations, or units should be established and successful models of seedling and planting methods should be encouraged. The principle of matching trees with suitable site conditions and adjusting measures to local conditions should be practiced. From a strategic viewpoint of solving ecological and economic problems of seabuckthorn development in the three northern areas, every seabuckthorn center must have its own germplasm nursery, standard plantation for popularizing, excellent seed and seedling nurseries and sufficient afforestation areas for demonstration and propaganda purposes. These measures would improve the ecological environment and promote economic and social development in the three northern areas of China. 展开更多
关键词 DEMARCATION PLANTATION planting model seabuckthorn three northern areas
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Prediction of Landscape Pattern of Soft Sandstone Area (SSA) after Seabuckthorn Planting 被引量:1
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作者 Jianzhong Hu 《American Journal of Plant Sciences》 2012年第1期171-176,共6页
As a pioneer plant in the gully slopes in the Soft Sandstone Area (SSA) for eco-economical consideration, ten years (1999-2008) planting of seabuckthorn has made 1642.83 km2, or 9.84%, of the total area of SSA change ... As a pioneer plant in the gully slopes in the Soft Sandstone Area (SSA) for eco-economical consideration, ten years (1999-2008) planting of seabuckthorn has made 1642.83 km2, or 9.84%, of the total area of SSA change into seabuckthorn coverage. In SSA the landscape has been divided into 9 types, such as seabuckthorn, sand, water, settlement, bush, open vegetation, forest, grassland and unused land. Seabuckthorn type is separated from the bush type for estimating the role of seabuckthron planting. By means of the Markov model, the developing trends of every landscape types can be determined to support the seabuckthorn project which influences the landscape pattern deeply in SSA. The prediction shows that the optimism ratio of seabuckthorn in the future should be 10.21%, the open vegetation 32.25%, and the forest percentage under 10%, which is a very wise tactics to avoid the serious death of various vegetations in SSA to match the local arid eco-environment. 展开更多
关键词 Landscape Pattern MARKOV Model PREDICTION seabuckthorn Soft SANDSTONE Area (SSA)
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Evaluation on Environmental Resource Value of Artificial Seabuckthorn Forest in Sandstone Area during 1999-2008
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作者 Jianzhong Hu 《American Journal of Plant Sciences》 2013年第12期2314-2317,共4页
China Seabuckthorn Ecological Project has been implemented for a decade (from 1999 to 2008) with an increasing seabuckthorn area of 1642.83 km2 in?the Sandstone Areas of Shanxi, Shaanxi and Inner Mongolia—the most se... China Seabuckthorn Ecological Project has been implemented for a decade (from 1999 to 2008) with an increasing seabuckthorn area of 1642.83 km2 in?the Sandstone Areas of Shanxi, Shaanxi and Inner Mongolia—the most serious soil erosion area in China. The vast artificial seabuckthorn forest’s value in environmental resource is assessed via 7 indicators on first-level, 15 indicators on secondary level and 35 indicators on third level in this research. As of 2008, the seabuckthorn environmental resource value is 10.017 billion RMB Yuan, which equals to 37.1 times of the project’s total investment of 0.27 billion RMB Yuan. It is proposed in this research that the external economical values such as soil and water conservation, windbreak and sand-fixation can be realized through relative national policies and taxes. Carbon-fixation and oxygen-producing value can be achieved through the international carbon trade. 展开更多
关键词 seabuckthorn ECOLOGICAL Project ENVIRONMENTAL RESOURCE Value EVALUATION SANDSTONE Areas China
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山西忻州沙棘叶茶的气候适宜性分析
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作者 李欣 李燕 +2 位作者 米晓楠 张天宇 李斌 《干旱地区农业研究》 北大核心 2026年第1期269-277,共9页
基于忻州市2001—2023年逐日气象观测数据,利用模糊数学法、加权平均法等构建沙棘叶茶的气候适宜度模型,得到忻州市沙棘叶茶在新梢生长期(5—9月)综合温度、降水、日照适宜度分布,通过几何平均法最终得到沙棘新梢生长期综合气候适宜度分... 基于忻州市2001—2023年逐日气象观测数据,利用模糊数学法、加权平均法等构建沙棘叶茶的气候适宜度模型,得到忻州市沙棘叶茶在新梢生长期(5—9月)综合温度、降水、日照适宜度分布,通过几何平均法最终得到沙棘新梢生长期综合气候适宜度分布,并探讨了气候适宜度与海拔高度之间的相关性,以期为忻州沙棘叶茶开发利用提供参考依据。结果表明:(1)综合温度适宜度(0.73~0.89)与综合日照适宜度(0.72~0.88)表现相似,均高于综合降水适宜度(0.49~0.59),表明降水是沙棘叶生长发育的主要限制条件;其中温度适宜度大值区位于宁武、静乐、五寨、岢岚及东部五台等海拔较高地区,降水适宜度大值区位于忻州偏西部地区,中东部忻定原盆地区适宜度较低,日照适宜度分布与降水适宜度相似。(2)综合气候适宜度介于0.67~0.76之间,空间分布大值区位于忻州偏西部地区,气候适宜度在新梢生长期随时间推进表现为先降低后升高。(3)气候适宜度与海拔高度密切相关,适宜度在海拔800~1600 m内先升高后降低,1400 m处达到最大,表明1400 m为忻州地区沙棘适宜的生长海拔。 展开更多
关键词 沙棘叶茶 气候适宜度 空间分布 海拔高度 模糊数学法
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尿素包合法富集沙棘籽油中α-亚麻酸的研究
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作者 杨丹玮 刘晨星 +2 位作者 戴贤君 夏其乐 曹艳 《中国油脂》 北大核心 2026年第3期74-79,120,共7页
为了促进沙棘籽油的开发和利用,采用化学酯交换(乙酯化)法结合尿素包合法对沙棘籽油中α-亚麻酸(ALA)进行富集,以沙棘籽油脂肪酸乙酯得率及ALA乙酯(ALA-EE)含量为指标,采用单因素实验对化学酯交换法工艺条件进行优化,采用单因素实验和... 为了促进沙棘籽油的开发和利用,采用化学酯交换(乙酯化)法结合尿素包合法对沙棘籽油中α-亚麻酸(ALA)进行富集,以沙棘籽油脂肪酸乙酯得率及ALA乙酯(ALA-EE)含量为指标,采用单因素实验对化学酯交换法工艺条件进行优化,采用单因素实验和正交实验对尿素包合富集工艺条件进行优化。结果表明:乙酯化的最佳条件为反应时间1.5 h、反应温度70℃、催化剂添加量1.0%(以沙棘籽油质量计)、醇油物质的量比8∶1,在该条件下沙棘籽油脂肪酸乙酯得率为81.82%,ALA-EE含量为33.41%;最佳尿素包合富集工艺条件为包合时间8 h、包合温度4℃、醇脲比(质量比)4∶1、酯脲比(质量比)1∶1,在该条件下沙棘籽油脂肪酸乙酯得率为34.60%,ALA-EE含量为42.86%,ALA含量较原料沙棘籽油的(28.10%)提高了52.53%。综上,化学酯交换法结合尿素包合法能够有效富集沙棘籽油中ALA,是一种可行性高的多不饱和脂肪酸富集技术。 展开更多
关键词 Α-亚麻酸 沙棘籽油 脂肪酸乙酯 化学酯交换法 尿素包合法
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Seabuckthorn Berries Extract Attenuates Pulmonary Vascular Hyperpermeability in Lipopolysaccharide-Induced Acute Lung Injury in Mice 被引量:4
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作者 DU Lei-lei LIU Ying +2 位作者 WAN Li CHEN Chu FAN Gang 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2022年第12期1081-1087,共7页
Objective:To investigate the effect of seabuckthorn berries extract(SBE)on pulmonary vascular hyperpermeability in the mice model of acute lung injury(ALI)induced by lipopolysaccharide(LPS).Methods:Sixty Kunming mice ... Objective:To investigate the effect of seabuckthorn berries extract(SBE)on pulmonary vascular hyperpermeability in the mice model of acute lung injury(ALI)induced by lipopolysaccharide(LPS).Methods:Sixty Kunming mice were allocated into 6 groups by a random number table,including control,LPS,dexamethasone(Dex,1 mg/kg),and 120,240 and 480 mg/kg SBE groups,10 mice in each group.Except the control group,mice were pre-treated with Dex and SBE,respectively,for 7 days before LPS was intraperitoneally injected to induce ALl.Pulmonary vascular hyperpermeabilitywas evaluated by histopathologic observation and transvascular leakagedetermination.Tumor necrosis factor alpha(TNF-α)and interleukin-6(IL-6)levels in serum were measured using enzyme-linked immunosorbent assay.The expression of nuclear factor-kappa B(NF-k B)p65 in lung cells was determined by immunofluorescence analysis.The contents of cytoplasmic inhibitorof nuclear factor-kBkinase(IKK)and nuclearp65,as wellasdownstreamproteins of E-selectin(CD62E)and intercellular adhesion molecule-1(ICAM-1),were determined using Western blot analysis.Results:Histopathological observation confirmed SBEtreatment alleviatedmorphological lesion induced by LPS.Compared with the LPS group,480 mg/kg SBE significantly decreased the water content of lung,Evans blue accumulation in lung tissue,and protein concentration and neutrophils count in bronchoalveolar lavage fluid(P<o.01);moreover,480 mg/kg SBE significantly suppressed release of TNF-αand IL-6,and down-regulated expressions of IKK,nuclear p65,ICAM-1 and CD62E(P<0.01).Conclusion:SBE maintained alveolar-capillary barrier integrity under endotoxin challenge in mice by suppressing the key factors in the pathogenesis of ALl. 展开更多
关键词 seabuckthorn berries extract pulmonary vascular hyperpermeability acute lung injury nuclear factor-kappa B NEUTROPHIL
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Comparative quantitative analysis of fruit oil from Hippophae rhamnoides(seabuckthorn) by qNMR, FTIR and GC–MS 被引量:3
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作者 Dattatraya Dinkar Gore Furkan Ahmad +3 位作者 Kulbhushan Tikoo Arvind Kumar Bansal Dinesh Kumar Inder Pal Singh 《Chinese Herbal Medicines》 CAS 2023年第4期607-613,共7页
Objective: To develop a qNMR method for quantitative analysis of triacylglycerols in fruit oil of Hippophae rhamnoides(seabuckthorn, SBT) and analyze commercial samples of SBT oils using GC–MS and FTIR.Methods: SBT f... Objective: To develop a qNMR method for quantitative analysis of triacylglycerols in fruit oil of Hippophae rhamnoides(seabuckthorn, SBT) and analyze commercial samples of SBT oils using GC–MS and FTIR.Methods: SBT fruit oil(IPHRFH) was extracted with hexane and the triglyceride(TAG) was isolated by vacuum liquid chromatography. Six different branded SBT oils purchased from e-commerce suppliers(Amazon) and in-house prepared SBT oil was analyzed by qNMR and fatty acyl composition of TAGs determined by using NMR. In-house oil was also analysed by GC–MS and FTIR spectroscopy.Results: The qNMR results showed that the oil contained 80.3% of triacylglycerol(TAG). The SBT oil TAGs comprised of linolenate 6.6%, palmitoleate/oleate 65.4%, and total saturated fatty acyl chain including palmitate 28% as determined by qNMR. GC–MS analysis revealed that the major acyl functionalities present in the TAG were palmitoleic acid 36.5%, oleic acid 12.9%, palmitic acid 21.2%, and linoleic acid 18%. Of the six commercial samples analyzed, samples from only one supplier(SW) were fruit oil;All others were the seed oils or mix of fruit oil and seed oil. The labels for samples except for the SW did not indicate whether it was fruit oil or seed oil.Conclusion: The results suggest that SBT oil should be analyzed by combination of GC–MS, FTIR and qNMR for factual content of free fatty acid or TAGs, which are chemically different in nature and affect the quality of oil. GC–MS showed the content of omega free fatty acids after hydrolysis, while qNMR and FTIR showed the content of TAGs. The major acyl functionalities found in SBT fruit oil TAGs are palmitoleate/palmitate/oleate, while linoleate and linonelate make up a minor fraction. Furthermore,analysis of commercial samples showed discrepancies between label claims and actual content. 展开更多
关键词 Hippophae rhamnoides L. omega fatty acids qNMR seabuckthorn triacylglycerols
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沙棘全果粉加工过程中脂肪酸和挥发性化合物的动态变化及其相关性分析
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作者 韩蓉 马燕 +3 位作者 潘俨 张健 张婷 许铭强 《食品工业科技》 北大核心 2026年第8期43-54,共12页
为探究沙棘全果粉加工过程中脂肪酸化合物和挥发性化合物的变化,本研究以沙棘为研究对象,采用靶向代谢组学与气相色谱-离子迁移谱联用技术(Gas Chromatography-Ion Mobility Spectromet Ry,GC-IMS)结合主成分分析(Principal Component A... 为探究沙棘全果粉加工过程中脂肪酸化合物和挥发性化合物的变化,本研究以沙棘为研究对象,采用靶向代谢组学与气相色谱-离子迁移谱联用技术(Gas Chromatography-Ion Mobility Spectromet Ry,GC-IMS)结合主成分分析(Principal Component Analysis,PCA)、相关性分析(Correlation Analysis,CorrA)等化学计量法初探了沙棘全果粉加工过程中脂肪酸和挥发性成分的动态变化及其相关性。结果表明,应用超高效液相三重四极杆质谱联用仪(Ultra Performance Liquid Chromatography-Triple Quadrupole Mass Spectrometry,UPLC-QQQ-MS)从沙棘全果粉中共鉴定出34种脂肪酸化合物,其中亚油酸(0.48~10.78 ng/mg)和棕榈油酸(0.03~5.91 ng/mg)为主要脂肪酸化合物。沙棘全果粉在加工过程中的总脂肪酸含量(2.48~114.84 ng/mg)整体呈下降趋势,在打浆和干燥阶段下降尤为显著(P<0.05),较原料解冻阶段分别下降了40.67%和62.6%。应用GC-IMS共鉴定出41种挥发性物质,整体呈先下降后上升趋势;基于变量重要性投影值(Variable Importance in Projection,VIP)>1筛选得到正己醛、芳香醇、2-甲基丁酸丁酯等12种关键挥发性化合物,结合ROVA判定正己醛为主要特征挥发性化合物;经相关性分析发现氧化芳樟醇与所有脂肪酸化合物均呈正相关。进一步对主要挥发性化合物的产生途径进行KEGG通路分析,明确了降解的脂质主要富集在脂肪酸代谢途径中,且不饱和脂肪酸生物合成途径得到的脂肪酸化合物有助于沙棘全果粉中的正己醛、2-戊酮、2-己酮等特征挥发性风味化合物生成。本研究为沙棘全果粉的品质提升奠定了基础。 展开更多
关键词 沙棘全果粉 加工过程 脂肪酸 挥发性化合物 相关性分析
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沙棘绿茶果冻的制备及工艺优化
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作者 廖月琴 马沁怡 +1 位作者 郑少君 罗宝浈 《农产品加工》 2026年第3期53-56,62,共5页
以沙棘汁和绿茶茶汤为主要原料,探究沙棘绿茶果冻的最佳配方,辅以卡拉胶、木糖醇和柠檬酸,以感官评分为评价指标,通过单因素试验和正交试验优化沙棘绿茶果冻的最佳配方。结果表明,沙棘绿茶果冻的最佳配方为沙棘汁添加量15%,绿茶茶汤添加... 以沙棘汁和绿茶茶汤为主要原料,探究沙棘绿茶果冻的最佳配方,辅以卡拉胶、木糖醇和柠檬酸,以感官评分为评价指标,通过单因素试验和正交试验优化沙棘绿茶果冻的最佳配方。结果表明,沙棘绿茶果冻的最佳配方为沙棘汁添加量15%,绿茶茶汤添加量50%,木糖醇添加量14%,卡拉胶添加量4%,柠檬酸添加量0.1%。该配方下沙棘绿茶果冻的感官评分为90分,弹性8.09 mm,咀嚼性2.7 mJ,可溶性固形物16.6%,析水率2.04%。沙棘绿茶果冻呈橘黄色,色泽均匀、口感爽滑、酸甜可口,且具有浓郁的沙棘风味及绿茶的独特清香。沙棘绿茶果冻的研制丰富了复合果冻的品类,为沙棘和绿茶的开发及利用提供了参考。 展开更多
关键词 沙棘 绿茶 正交试验 复合果冻
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沙棘黄酮提取工艺优化及其生物活性研究
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作者 陈雨轩 王慧 +3 位作者 程新凤 镇慧子 江逸凡 王贝 《广州化工》 2026年第2期67-71,86,共6页
研究采用超声辅助醇提法提取沙棘黄酮,通过单因素试验和响应面优化,筛选得到沙棘黄酮最优工艺并从抗氧化性能和抑菌性能两方面评价沙棘黄酮的生物活性。通过单因素试验结合响应面优化分析,获取最佳工艺参数,基于此参数所得到的沙棘黄酮... 研究采用超声辅助醇提法提取沙棘黄酮,通过单因素试验和响应面优化,筛选得到沙棘黄酮最优工艺并从抗氧化性能和抑菌性能两方面评价沙棘黄酮的生物活性。通过单因素试验结合响应面优化分析,获取最佳工艺参数,基于此参数所得到的沙棘黄酮具有良好的体外抗氧化活性,质量浓度为120μg/mL时,对DPPH·和羟基自由基的清除率分别为99.5%、79.4%。对沙棘黄酮进行抑菌性能测定,沙棘黄酮对革兰氏阳性菌和革兰氏阴性菌均有抑制作用,对大肠杆菌、铜绿假单胞菌、枯草芽孢杆菌、金黄色葡萄球菌的MIC分别为:0.75 mg/mL、0.75 mg/mL、0.75 mg/mL、1.5 mg/mL。本试验为沙棘相关产品的精加工提供了参考。 展开更多
关键词 沙棘黄酮 超声提取 响应面优化 抗氧化活性 抑菌活性
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沙棘黄酮抑制p38MAPK/NF-κB信号通路改善大鼠缺血性心律失常的机制研究
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作者 杨娜 曹跃岭 +1 位作者 郭丽华 岳彩纪 《中西医结合心脑血管病杂志》 2026年第1期50-56,共7页
目的:基于p38丝裂原活化蛋白激酶(p38MAPK)/核因子-κB(NF-κB)信号通路探讨沙棘黄酮对大鼠缺血性心律失常的影响。方法:通过结扎冠状动脉左前降支制备缺血性心律失常大鼠模型,随机分为模型组、沙棘黄酮低剂量组(100 mg/kg)、沙棘黄酮... 目的:基于p38丝裂原活化蛋白激酶(p38MAPK)/核因子-κB(NF-κB)信号通路探讨沙棘黄酮对大鼠缺血性心律失常的影响。方法:通过结扎冠状动脉左前降支制备缺血性心律失常大鼠模型,随机分为模型组、沙棘黄酮低剂量组(100 mg/kg)、沙棘黄酮高剂量组(200 mg/kg)、普萘洛尔组(15 mg/kg)、沙棘黄酮+p38MAPK激活剂组(200 mg/kg沙棘黄酮+25μg p38MAPK激活剂),每组12只,另取12只大鼠作为假手术组。连续干预7 d。末次给药24 h后,心电图监测30 min内室性期前收缩(VPC)、室性心动过速(VT)和心室颤动(VF)发生次数,并评估心律失常严重程度;生物信号采集系统检测30 min内心率(HR)、左心室收缩压(LVSP)、左心室舒张末压(LVEDP)、左心室内压最大上升速率(+dp/dt_(max))、左心室内压最大下降速率(-dp/dt_(max))等心功能指标变化;苏木素-伊红染色观察缺血区心肌组织病理学变化;酶联免疫吸附(ELISA)法检测缺血区心肌组织中白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)、神经生长因子(NGF)水平;蛋白免疫印迹法(Western Blot)检测缺血区心肌组织中p38MAPK/NF-κB信号通路相关蛋白表达。结果:与假手术组比较,模型组大鼠心肌纤维排列不规则,心肌间质有炎性细胞浸润,染色心肌纤维呈血小板样分布,心电图出现异常,出现T波高耸或ST段抬高现象,VPC、VT、VF发生次数,心律失常评分,HR、LVEDP、IL-1β、TNF-α、NGF水平,p38MAPK、NF-κB蛋白表达显著升高,LVSP、+dp/dt_(max)、-dp/dt_(max)显著降低(P<0.05)。与模型组比较,沙棘黄酮低剂量组、沙棘黄酮高剂量组、普萘洛尔组大鼠缺血区心肌组织炎性细胞浸润减少,心肌组织损伤、心电图异常情况、T波高耸或ST段抬高现象明显改善,VPC、VT、VF发生次数、心律失常评分、HR、LVEDP、IL-1β、TNF-α、NGF水平,p38MAPK、NF-κB蛋白表达显著降低,LVSP、+dp/dt_(max)、-dp/dt_(max)显著升高(P<0.05)。沙棘黄酮高剂量组、普萘治疗组上述指标改善效果优于沙棘黄酮低剂量组(P<0.05)。沙棘黄酮高剂量组和普萘洛尔组上述指标差异无统计学意义(P>0.05)。与沙棘黄酮高剂量组比较,沙棘黄酮+p38MAPK激活剂组大鼠缺血区心肌组织损伤程度和炎性细胞浸润加重,心电图明显异常,T波高耸或ST段抬高现象加重,VPC、VT、VF发生次数,心律失常评分,HR、LVEDP、IL-1β、TNF-α、NGF水平,p38MAPK、NF-κB蛋白表达显著升高,LVSP、+dp/dt_(max)、-dp/dt_(max)显著降低(P<0.05)。结论:沙棘黄酮可改善缺血性心律失常大鼠症状、缺血区心肌组织损伤和心功能,抑制炎性因子和NGF水平,可能与其抑制p38MAPK/NF-κB信号通路活性有关。 展开更多
关键词 缺血性心律失常 沙棘黄酮 P38丝裂原活化蛋白激酶 核因子-ΚB 实验研究
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沙棘玫瑰醋高产酸菌株的分离和筛选及分子生物学鉴定 被引量:1
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作者 张海燕 康三江 +2 位作者 陈志玺 袁晶 苟丽娜 《寒旱农业科学》 2025年第1期60-66,共7页
醋酸菌是果醋发酵过程中产生醋酸及其风味衍生物的重要微生物,具有耐醇性或耐温性的高产酸醋酸菌对提高发酵型果醋质量意义重大。为了解决沙棘玫瑰醋风味品质差的问题,筛选适合发酵的醋酸菌,为促进沙棘玫瑰醋风味品质的提高及研发复合... 醋酸菌是果醋发酵过程中产生醋酸及其风味衍生物的重要微生物,具有耐醇性或耐温性的高产酸醋酸菌对提高发酵型果醋质量意义重大。为了解决沙棘玫瑰醋风味品质差的问题,筛选适合发酵的醋酸菌,为促进沙棘玫瑰醋风味品质的提高及研发复合发酵菌剂提供理论支持。以浙江玫瑰醋醋醪为菌源,筛选出适合沙棘玫瑰醋生产的高产酸专用菌种。结果表明,根据菌落形态及生理生化试验分离筛选出4株高产酸醋酸杆菌(Acetobacter),其中菌株SJC01、SJC04的产酸量均达到42.00 g/L以上,能耐受体积分数4%乙酸溶液、体积分数0.5%氯化钠溶液、体积分数6.0%乙醇溶液,且分别能在12~36、24~48 h内进入迅速生长期。通过16SrDNA序列分子生物学鉴定,菌株SJC01为果实醋杆菌(Acetobacter pomorum),菌株SJC04为巴氏醋杆菌(Acetobacter pasteurians)。 展开更多
关键词 沙棘玫瑰醋 醋酸杆菌 高产酸 分离筛选 菌种鉴定
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基于FA-XGBoost算法的拉曼光谱预测沙棘籽油含量
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作者 王照 刘斌 吴军 《光散射学报》 北大核心 2025年第1期77-85,共9页
沙棘籽油具有很高的营养价值和药用价值,高额利润驱使不法商家以次充好、以假乱真,目前缺少沙棘籽油掺假鉴别的方法学研究。因此,本文提出一种基于FA-XGBoost算法赋能拉曼光谱技术实现沙棘籽油掺假检测的技术方法。采用葵花籽油按不同... 沙棘籽油具有很高的营养价值和药用价值,高额利润驱使不法商家以次充好、以假乱真,目前缺少沙棘籽油掺假鉴别的方法学研究。因此,本文提出一种基于FA-XGBoost算法赋能拉曼光谱技术实现沙棘籽油掺假检测的技术方法。采用葵花籽油按不同体积分数掺假沙棘籽油,使用近红外显微拉曼光谱仪测量所有样本的拉曼光谱,定性分析了沙棘籽油与葵花籽油的拉曼光谱特征峰。通过FA-XGBoost算法构建了针对葵花籽油掺假沙棘籽油的回归模型,使用测试集评价了FA-XGBoost模型的预测效果,其中决定系数为0.9798,均方误差为0.0031。总之,本文提出了一种面向沙棘籽油掺假的定量检测方法,通过FA-XGBoost算法与拉曼光谱的结合实现了葵花籽油掺假沙棘籽油的浓度预测,该方法对规范国内沙棘籽油消费市场具有潜在的应用价值和现实意义。 展开更多
关键词 拉曼光谱 因子分析 XGBoost 沙棘籽油 定量分析
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苹果-沙棘复合饮品益生菌发酵工艺优化研究
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作者 袁晶 康三江 +2 位作者 张海燕 苟丽娜 宋娟 《寒旱农业科学》 2025年第5期459-466,共8页
以苹果-沙棘汁为原料,运用两水平分式析因设计法(25)筛选关键影响因素,并结合响应面法优化益生菌发酵条件,以期改善苹果-沙棘汁口感,提升饮品营养功能。通过分析料液比、接种量、菌浓度、发酵温度及发酵时间对苹果-沙棘汁中活菌数和可... 以苹果-沙棘汁为原料,运用两水平分式析因设计法(25)筛选关键影响因素,并结合响应面法优化益生菌发酵条件,以期改善苹果-沙棘汁口感,提升饮品营养功能。通过分析料液比、接种量、菌浓度、发酵温度及发酵时间对苹果-沙棘汁中活菌数和可滴定酸含量的影响,确定显著影响因素料液比、发酵温度和发酵时间。在此基础上,运用响应面中心组合试验设计法,以活菌数和感官评分为衡量指标优化最佳发酵工艺。结果表明,最优条件为料液比1∶1(V/V)、接种量6%、菌浓度8.00 lg(CFU/mL)、发酵温度34℃、发酵时间24 h,在此条件下,发酵苹果-沙棘汁的活菌数达到8.78 lg(CFU/mL),感官评分为33.91。研究表明,苹果-沙棘汁可以作为益生菌发酵的良好载体,与发酵前比,发酵显著改善了苹果-沙棘汁的口感。 展开更多
关键词 益生菌 发酵 苹果-沙棘汁 工艺优化
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宁夏黄土区平茬对退化沙棘林土壤水分的影响 被引量:1
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作者 李振明 董立国 +9 位作者 安钰 万海霞 韩新生 何钰 王月玲 郭永忠 韩懂懂 许浩 郑纪勇 蔡进军 《水土保持学报》 北大核心 2025年第4期208-214,224,共8页
[目的]为解决退化沙棘林平茬与土壤水分关系不清的问题,系统研究平茬对退化沙棘林土壤水分的影响,以期为宁夏黄土区沙棘林平茬复壮提供理论和技术上的支撑。[方法]设置平茬(高度≤30 cm)、不平茬2个处理,每个处理4个重复,采用随机区组... [目的]为解决退化沙棘林平茬与土壤水分关系不清的问题,系统研究平茬对退化沙棘林土壤水分的影响,以期为宁夏黄土区沙棘林平茬复壮提供理论和技术上的支撑。[方法]设置平茬(高度≤30 cm)、不平茬2个处理,每个处理4个重复,采用随机区组设计进行排列。[结果]1)平茬处理表层(0~20 cm)土壤水分体积分数较未平茬处理显著增加4.10%~70.01%;平茬处理浅层(20~80 cm)土壤水分体积分数较未平茬处理显著增加8.99%~11.12%;平茬处理中层(80~180 cm)土壤水分体积分数较未平茬处理显著增加14.36%~28.97%;平茬处理深层(180~280 cm)土壤水分体积分数较未平茬处理显著增加5.48%~29.21%。2)平茬处理0~280 cm土层土壤储水量较未平茬处理显著增加7.11%~22.90%,土壤水分亏缺指数较未平茬处理显著增加98.16%~300.00%。3)平茬处理表层(0~20 cm)土壤总孔隙度较未平茬处理显著减少1.90%,非毛管孔隙度较未平茬处理显著减少44.84%,毛管孔隙度较未平茬处理显著增加1.18%。[结论]退化沙棘林平茬显著增加土壤水分体积分数、储水量及毛管孔隙度,减少土壤水分亏缺。 展开更多
关键词 宁夏黄土区 沙棘 平茬 土壤水分 持水特性
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沙棘果渣膳食纤维对丙烯酰胺的吸附特性 被引量:4
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作者 崔蔚然 吕孟玲 +3 位作者 白红雨 孙悦 王慧 邵美丽 《食品工业科技》 北大核心 2025年第6期361-368,共8页
本文旨在探究沙棘果渣膳食纤维(Dietary fiber,DF)吸附丙烯酰胺(Acrylamide,AA)的影响因素和吸附稳定性,同时利用等温吸附模型和动力学模型对沙棘果渣DF吸附AA过程进行拟合。结果表明,随着沙棘果渣DF添加量增加、吸附时间延长,吸附率不... 本文旨在探究沙棘果渣膳食纤维(Dietary fiber,DF)吸附丙烯酰胺(Acrylamide,AA)的影响因素和吸附稳定性,同时利用等温吸附模型和动力学模型对沙棘果渣DF吸附AA过程进行拟合。结果表明,随着沙棘果渣DF添加量增加、吸附时间延长,吸附率不断增大;随着AA浓度、体系温度、体系pH增加,吸附率呈先增加后降低的趋势。当沙棘果渣DF添加量8 mg/mL、AA 4μg/mL、pH5、温度35℃、作用时间8 h时,吸附率最大,此时吸附量为44.8μg/g。且沙棘果渣DF-AA复合物具有较好的体内外稳定性。在胃环境中,当pH1.5~2.5、消化时间1~2 h时,沙棘果渣DF-AA复合物比较稳定,AA释放率为0~12.28%;在肠环境中,胆盐浓度0.1%,消化时间3 h时,沙棘果渣DF-AA复合物稳定性最好,AA释放率为14.75%。另外,Langmuir(R^(2)=0.93)、Freundlich(R^(2)=0.90)2种等温吸附模型及拟二级动力学模型(R^(2)=0.94)均能够很好地拟合沙棘果渣DF吸附AA过程,表明该吸附过程既存在物理吸附,又存在化学吸附。本研究可为沙棘DF在AA吸附脱毒方面的应用奠定基础。 展开更多
关键词 沙棘果渣膳食纤维 丙烯酰胺 吸附 体外模拟消化 等温吸附模型 吸附动力学模型
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