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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:6
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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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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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Seabuckthorn Berries Extract Attenuates Pulmonary Vascular Hyperpermeability in Lipopolysaccharide-Induced Acute Lung Injury in Mice 被引量:3
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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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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:1
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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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俄罗斯第三代大果沙棘果实品质综合评价 被引量:1
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作者 戈素芬 赵鑫丹 +3 位作者 高岩 阮成江 李前 张东为 《现代食品科技》 北大核心 2025年第7期249-259,共11页
为了比较俄罗斯第三代大果沙棘优良品种果实品质特性,该研究以8个进口的俄罗斯第三代大果沙棘品种为研究对象,以目前“三北”地区大面积推广的主栽大果沙棘‘深秋红’为对照,针对其果实的百果质量、总酚含量、维生素E含量等20项品质指... 为了比较俄罗斯第三代大果沙棘优良品种果实品质特性,该研究以8个进口的俄罗斯第三代大果沙棘品种为研究对象,以目前“三北”地区大面积推广的主栽大果沙棘‘深秋红’为对照,针对其果实的百果质量、总酚含量、维生素E含量等20项品质指标进行测定,采用主成分分析及回归分析方法对其进行综合评价。结果表明:8个俄罗斯第三代大果沙棘百果质量为25.27~73.18 g,维生素E含量为7.21~158.54μg/g,总酚含量为1.26~2.68 mg/g,可溶性糖含量为18.46~29.86 mg/g,甜酸比为0.85~2.00。主成分分析共提取5个主成分,代表了以上指标的93.767%的信息。采用逐步回归分析的方法将原有20项评价指标简化为维生素E含量、甜酸比和总酚含量3项指标。综合评价发现,除‘丹棒’外,其余7个俄罗斯品种综合评分均超过对照品种‘深秋红’,且‘苏达鲁斯卡’、‘伊丽莎白’、‘皇冠’、‘橙棒’得分较高。该研究结果为不同地区栽植的大果沙棘果实品质评价和主要品质指标的确定提供了依据,并筛选出苏达鲁斯卡’、‘伊丽莎白’、‘皇冠’、‘橙棒’4个优良品种,可作为优质沙棘资源重点加以推广利用。 展开更多
关键词 沙棘 果实品质 主成分分析 回归分析 综合评价
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沙棘籽粕抑菌肽的分离纯化及抑菌机制的初探
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作者 江峻峰 朱东亮 +6 位作者 曾琦琪 孙嘉莉 牟晓娟 吴同华 单良 王苏琪 包晓玮 《中国调味品》 北大核心 2025年第6期1-9,共9页
目的:分离纯化沙棘籽粕抑菌肽并对其抑菌机制进行初步探究。方法:以沙棘籽粕为原料,采用酶解法制备抑菌肽。以金黄色葡萄球菌为研究对象,以抑菌圈直径为评价标准,通过超滤、凝胶层析过滤(Sephadex G-25)、液相色谱与串联质谱联用(LC-MS/... 目的:分离纯化沙棘籽粕抑菌肽并对其抑菌机制进行初步探究。方法:以沙棘籽粕为原料,采用酶解法制备抑菌肽。以金黄色葡萄球菌为研究对象,以抑菌圈直径为评价标准,通过超滤、凝胶层析过滤(Sephadex G-25)、液相色谱与串联质谱联用(LC-MS/MS)对沙棘籽粕抑菌肽进行分离、纯化和肽段鉴定,并通过抑菌肽数据库(APD3)筛选出潜在抑菌肽段,结合分子对接手段分析其相互作用力和作用模式。测定抑菌肽最小抑菌浓度(MIC);结合激光共聚焦扫描显微镜、扫描电镜等方法从金黄色葡萄球菌细胞膜通透性和完整性等方面对其抑菌机制进行初步探索。结果:经超滤、凝胶层析分离后,F-Ⅲ-A组分具有较强的抑菌活性,通过LC-MS/MS结合抑菌肽数据库筛选得到8条潜在抑菌活性的肽段序列,分别为AIGVDILK、ALEACVKARNEGR、ARPAADER、IGGIGTVPVGR、ILSLSPSR、VGLAETIR、VLQLETAAGAAIR、VPTVDVSVVDLTVR。分子对接结果显示8条多肽和受体结合的分子对接能量范围为-10.0265~-7.4156 kcal/mol,平均结合能为-8.3608 kcal/mol。MIC为2.5 mg/mL,激光共聚焦显微镜观察PI单通道显示抑菌肽处理组较对照组红色荧光强度增强,扫描电镜显示抑菌肽处理后菌体表面毛糙不光滑,并出现不同程度的皱缩、塌陷,说明抑菌肽破坏了金黄色葡萄球菌细胞膜、细胞壁的完整性。结论:对沙棘籽粕抑菌肽的分离纯化和抑菌机制的探究促进了沙棘籽粕活性肽的深度开发,并为制备抑菌肽产品提供了理论依据。 展开更多
关键词 沙棘籽粕 抑菌肽 超滤 分子对接 抑菌机制
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适于沙棘汁发酵的乳酸菌适应性进化策略研究
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作者 陈彦辉 张智锋 +4 位作者 庄姣 齐瑾 高岩 王彦娟 剧柠 《食品与生物技术学报》 北大核心 2025年第1期115-124,共10页
【目的】利用沙棘汁中主要的有机酸胁迫促进乳酸菌的适应性进化,从而提高其在沙棘汁中的抗逆性。【方法】首先从宁夏浆水中分离得到的8株乳酸菌里筛选出2株适用于沙棘汁发酵的菌株;接着采用L-苹果酸、奎宁酸胁迫进行乳酸菌适应性进化处... 【目的】利用沙棘汁中主要的有机酸胁迫促进乳酸菌的适应性进化,从而提高其在沙棘汁中的抗逆性。【方法】首先从宁夏浆水中分离得到的8株乳酸菌里筛选出2株适用于沙棘汁发酵的菌株;接着采用L-苹果酸、奎宁酸胁迫进行乳酸菌适应性进化处理,并对这2种策略提高目标菌株耐受性的效果进行比较分析。选择L-苹果酸胁迫对菌株LP-1适应性进化125 d。【结果】改良后的菌株LP-1-679在发酵沙棘汁时可积累高达0.4 g/L的乳酸,苹果酸消耗率为88.24%,分别是出发菌株的2.67倍和6.60倍,且具备一定的遗传稳定性。与初始菌株相比,菌株LP-1-679中部分饱和脂肪酸(C14:0、C21:0)质量分数有所下降,不饱和脂肪酸(C16:1、C18:1n9c、C22:1n9)质量分数有所上升。【结论】经过酸胁迫乳酸菌得到一株发酵性能好、遗传稳定性强的菌株,该菌株可能是通过调整细胞膜中脂肪酸的组成来抵御酸胁迫。 展开更多
关键词 乳酸菌 沙棘 适应性进化 L-苹果酸 酸胁迫
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响应面优化沙棘叶总黄酮的亚临界水提取工艺 被引量:3
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作者 敖羽 张健 +4 位作者 韩蓉 马燕 周辉 吕雅婷 张婷 《保鲜与加工》 北大核心 2025年第4期60-66,共7页
为提高沙棘叶副产物利用率,研发并优化适于工业化生产的沙棘叶总黄酮提取工艺。以总黄酮得率为响应值,在单因素试验的基础上,采用响应面试验优化亚临界水提取沙棘叶总黄酮工艺,并与溶剂提取法和超声提取法进行比较。结果表明,4个单因素... 为提高沙棘叶副产物利用率,研发并优化适于工业化生产的沙棘叶总黄酮提取工艺。以总黄酮得率为响应值,在单因素试验的基础上,采用响应面试验优化亚临界水提取沙棘叶总黄酮工艺,并与溶剂提取法和超声提取法进行比较。结果表明,4个单因素中,提取温度、料液比、提取时间对沙棘叶总黄酮得率影响较大,依次分别为:提取温度>料液比>提取时间,但提取压力对其无显著影响;响应面优化得到最优工艺参数为:提取温度130℃,提取时间19 min,料液比1∶26(g/mL),在此条件下,沙棘叶总黄酮得率可达6.87%±0.15%,分别为传统溶剂提取法和超声提取法的1.95倍和1.81倍。本研究为生产中沙棘叶总黄酮的提取提供了一种绿色高效的方法,也为其开发利用提供了新思路。 展开更多
关键词 沙棘叶 总黄酮 亚临界水提取 响应面法 工艺优化
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露天煤矿复垦区沙棘混交林土壤微生物群落结构特征研究
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作者 李赟 张全喜 +5 位作者 张瀛澜 李佳晟 倪璐 冯森霞 喻其林 郭东罡 《微生物学杂志》 北大核心 2025年第4期12-22,共11页
针对黄土高原露天煤矿复垦区土壤修复情况,探究以沙棘为主,油松、刺槐和柠条为辅的八种复垦模式下土壤微生物群落结构与环境因子的关系。以安太堡露天煤矿西排土场的生物多样性与生态系统功能(Biodiversity-Ecosystem Functioning,BEF)... 针对黄土高原露天煤矿复垦区土壤修复情况,探究以沙棘为主,油松、刺槐和柠条为辅的八种复垦模式下土壤微生物群落结构与环境因子的关系。以安太堡露天煤矿西排土场的生物多样性与生态系统功能(Biodiversity-Ecosystem Functioning,BEF)样地中沙棘为主,刺槐、油松和柠条为辅的24块样地为研究对象,采用高通量测序技术,结合Spearman、冗余分析(RDA)、主坐标分析(PcoA)等方法,对微生物的群落组成及多样性进行研究,同时揭示优势微生物群落,并探究土壤环境驱动因子与其相关性。结果显示,子囊菌门(Ascomycota)、担子菌门(Basidiomycota)以及孢霉菌门(Mortierellomycota)为真菌群落中的优势类群,其中,沙棘+油松模式中的此三种真菌门类的相对丰度最高;而放线菌门(Actinobacteria)、变形菌门(Proteobacteria)以及酸杆菌门(Acidobacteria)为细菌中的优势类群,其中,沙棘+油松模式中的此三种细菌门类的相对丰度最高。复垦区土壤中真菌群落的多样性和丰富度具有显著差异,但细菌群落的差异不显著,其中细菌群落多样性明显多于真菌。土壤真菌和细菌群落各样本间组成差异均显著。速效钾(AK)是真菌群落组成的主要驱动因子,pH是细菌群落组成的主要驱动因子。在露天矿区生态复垦过程中,沙棘+油松模式是优势菌群含量最高的恢复模式,沙棘+油松+刺槐模式是微生物多样性最高的模式,沙棘模式是受环境因子影响最小的模式。 展开更多
关键词 沙棘混交林 煤矿复垦区 植物修复模式 微生物群落组成 环境驱动因子
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基于非靶向代谢组学分析不同发酵时期新疆沙棘酵素代谢产物的差异 被引量:1
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作者 范蕊 王文文 +3 位作者 王腾斌 卢彬 刘潇 曹雪琴 《食品与发酵工业》 北大核心 2025年第10期167-176,共10页
该研究采用超高效液相色谱-质谱联用(ultra-performance liquid chromatography-mass spectrometry,UPLC-MS)非靶向代谢组学技术分析沙棘酵素不同发酵时期产生的各类差异代谢化合物。分别使用偏最小二乘判别方法、主成分分析方法、人类... 该研究采用超高效液相色谱-质谱联用(ultra-performance liquid chromatography-mass spectrometry,UPLC-MS)非靶向代谢组学技术分析沙棘酵素不同发酵时期产生的各类差异代谢化合物。分别使用偏最小二乘判别方法、主成分分析方法、人类代谢数据库HMDB(Human Metabolome Database)化合物分类、KEGG通路富集、韦恩图(Venn)及火山图等对代谢组数据进行差异分析。共鉴定出16类1164种代谢物质,其中有机酸、有机杂环化合物、脂质和类脂分子三类代谢产物占比最高,主要参与柠檬酸循环(三羧酸循环)、丁酸代谢、色氨酸代谢等代谢途径。以偏最小二乘判别分析模型变量投影重要性值≥1、P值<0.05、FC>2和FC<1/2为标准筛选显著差异代谢物,共筛选出7种显著差异代谢化合物。该研究针对不同发酵时期代谢物质含量变化,探索该过程中的活性物质成分,旨在为沙棘酵素功能成分及代谢调控机制提供科学依据,为后期沙棘资源的开发利用奠定理论基础,助力沙棘产业纵深发展。 展开更多
关键词 沙棘 非靶向代谢组学 酵素 代谢产物 差异分析
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