马尾藻海藻多糖生物活性研究新进展     

周乾云  姜潮 《现代农业科技》2019,(12)

近年来的研究表明,马尾藻中富含多种新型生物活性化合物,如海藻多酚、海藻多糖及多种硫酸多糖衍生物。在分离出的生物活性成分中,海藻多糖因其具有良好的保健作用和药用效果而备受关注。同时,有大量研究已经证明,马尾藻海藻多糖对人类疾病的预防以及恢复具有积极效果。因此,本文对近年来马尾藻海藻多糖的抗凝血、抗氧化、抗肿瘤、抗血管生成和抗炎症活性的最新进展进行了综述,以期能助推马尾藻海藻多糖的研究,并且协助填补理论研究与工业应用之间的知识鸿沟。  相似文献   

Mass preparation of marine silage from Undaria pinnatifida and its dietary effect for young pearl oysters     

Motoharu  UCHIDA  the late Katsuyuki  NUMAGUCHI  Masakazu  MURATA 《Fisheries Science》2004,70(3):456-462

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育苗基质喷施海藻肥对番茄幼苗生长的影响     

徐昱松  宫彬彬  吴晓蕾  李敬蕊  高洪波 《河北农业大学学报》2022,45(4):32-36

以番茄‘合作908’为试材,在筛选出的3种稻壳基质中进行育苗,通过喷施5种不同浓度海藻肥,研究育苗基质和海藻肥耦合效应对番茄幼苗生长的影响。结果表明∶番茄幼苗在3种育苗基质中生长存在显著差异,以腐熟稻壳∶蛭石∶珍珠岩=6∶2∶2(T2)处理幼苗生长最健壮;喷施800倍液海藻肥处理效果最佳,其株高、茎粗、干鲜重、根系活力及壮苗指数均显著高于其他浓度处理;壮苗指数多因素方差分析结果表明：基质种类×海藻肥对壮苗指数存在互作（P=0.029）,其中基质种类影响程度大于海藻肥;T2基质+喷施800倍液海藻肥处理幼苗生长最佳,根系活力和壮苗指数分别比对照提高24.04%和19.05%。此结果可以为工厂化番茄优质种苗培育提供理论依据。  相似文献   

Anti-oxidant activity of methanol extracts from Indonesian seaweeds in an oil emulsion model   总被引：2，自引：0，他引：2  

Joko  SANTOSO  Yumiko  YOSHIE-STARK  Takeshi  SUZUKI 《Fisheries Science》2004,70(1):183-188

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Distribution of free L-cysteine and glutathione in seaweeds   总被引：1，自引：0，他引：1  

Makoto Kakinuma  Chan Sun Park  Hideomi Amano 《Fisheries Science》2001,67(1):194-196

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海藻粉和抗菌肽及其协同效应对蛋鸡生产性能与蛋品质的影响     

白建  杜京旗  弓玉红  王瑞  刘宝琦 《动物营养学报》2014,26(9)

本试验旨在探讨海藻粉和抗菌肽及其协同效应对蛋鸡生产性能与蛋品质的影响.采用4×2(海藻粉×抗菌肽预混剂)完全随机试验设计,将480只海兰褐蛋鸡随机分为8个组,每组5个重复,每个重复12只.饲粮海藻粉的添加水平分别为0、1.0％、3.0％、5.0％,抗菌肽预混剂的添加水平分别为300、600 mg/kg.预试期7d,正试期28 d.结果表明:1)饲粮添加海藻粉显著提高了产蛋率、蛋料比、蛋黄颜色和蛋壳强度(P＜0.05).2)饲粮添加抗菌肽显著提高了产蛋率和蛋壳强度(P＜0.05).3)海藻粉和抗菌肽协同效应显著提高了产蛋率、蛋料比、蛋黄颜色和蛋壳强度(P＜0.05).由此可见,海藻粉和抗菌肽对蛋鸡生产性能与蛋品质的影响存在协同效应,以5％海藻粉+300 mg/kg抗菌肽最为理想.  相似文献   

Effect of a seaweed mixture on serum lipid level and platelet aggregation in rats     

Hideomi?AmanoEmail author  Makoto?Kakinuma  Daniel?A?Coury  Haruka?Ohno  Takaaki?Hara 《Fisheries Science》2005,71(5):1160-1166

ABSTRACT:   To assess the effect of a seaweed mixture on lipid levels in serum as well as platelet aggregation in rats, Eisenia bicyclis ('Arame'), Hizikia fusiformis ('Hijiki') and Undaria pinnatifida sporophylls ('Mekabu'), all brown seaweeds, and Porphyra yezoensis ('Susabinori'), a red seaweed, were powdered and mixed in a ratio of 45:30:20:5 (w/w). When rats were fed a cholesterol-rich diet containing this mixture of seaweeds (9–10% w/w) for 28 days, serum total cholesterol, LDL-cholesterol, free cholesterol, and triglyceride levels declined significantly to 49.7%, 48.1%, 49.0% and 74.8%, respectively, of those of the control. Serum HDL-cholesterol, however, was unchanged. Though activated partial thromboplatin time, prothrombin time, antithrombin III activity, and fibrinogen levels in plasma were unchanged, the maximal ADP- and collagen-induced platelet aggregation decreased significantly to 89.0% and 85.5% control levels, respectively. These results indicate that this mixture of E. bicyclis , H. fusiformis , U. pinnatifida sporophylls, and P. yezoensis , is useful for the prevention of hyperlipidemia and thrombosis in rats.  相似文献   

The abundance of juvenile yellowtail (Seriola quinqueradiata) near the Kuroshio: the roles of drifting seaweed and regional hydrography     

SHINJI UEHARA  CHRISTOPHER T. TAGGART  TAKUMI MITANI  IAIN M. SUTHERS 《Fisheries Oceanography》2006,15(5):351-362

We assess the effect of drifting seaweed (Sargassum sp.) biomass, geography and hydrography on juvenile yellowtail (Seriola quinqueradiata) abundance variation off the southeast coast of Japan, near the Kuroshio Current. The amount of drifting seaweed mats progressively increased northeastward into the cooler, coastal waters. Frontal structure indexed using a station‐to‐station ΔSST did not explain spatial variation in the seaweed mat distribution, although the western extent of the Kuroshio Current appeared to act as a boundary. Juvenile yellowtail constituted 51–62% of the fish collected in association with drifting seaweed mats in April 1996 and 1997 and 29% in June 1996. The abundance of juvenile yellowtail was positively correlated with seaweed biomass. The geographic distribution of juvenile yellowtail associated with drifting mats varied among sampling periods, being more southwesterly in April and more northeasterly in June. Simple multiple regression models based on seaweed biomass and geographic distribution (latitude) explained between 35% and 43% of the variation in juvenile yellowtail abundance in spring. Associations with spatial and temporal variations in hydrographic conditions did not contribute to explained variation in a meaningful manner. The results presented here indicate that, off the southeast coast of Japan during April, yellowtail juveniles are likely to be most abundant when seaweed biomass is high, occur offshore, and are bounded by the western extent of the Kuroshio Current near the 19–20°C SST isotherm.  相似文献   

Tipping Points in Seaweed Genetic Engineering: Scaling Up Opportunities in the Next Decade     

Hanzhi Lin  Song Qin 《Marine drugs》2014,12(5):3025-3045

Seaweed genetic engineering is a transgenic expression system with unique features compared with those of heterotrophic prokaryotes and higher plants. This study discusses several newly sequenced seaweed nuclear genomes and the necessity that research on vector design should consider endogenous promoters, codon optimization, and gene copy number. Seaweed viruses and artificial transposons can be applied as transformation methods after acquiring a comprehensive understanding of the mechanism of viral infections in seaweeds and transposon patterns in seaweed genomes. After cultivating transgenic algal cells and tissues in a photobioreactor, a biosafety assessment of genetically modified (GM) seaweeds must be conducted before open-sea application. We propose a set of programs for the evaluation of gene flow from GM seaweeds to local/geographical environments. The effective implementation of such programs requires fundamentally systematic and interdisciplinary studies on algal physiology and genetics, marine hydrology, reproductive biology, and ecology.  相似文献   

海藻生根剂对四季小白菜生长的影响   总被引：2，自引：0，他引：2  

刁红霞  周平  于和平  王海华 《现代农业科技》2014,(2)

以四季小白菜为材料,采用盆栽试验用海藻生根剂对白菜苗进行灌根处理,通过测量不同处理对小白菜的株高、叶面积、干重等生长指标和光合速率、硝酸还原酶的活性、根系活力等生理指标研究海藻生根剂对四季小白菜生长的影响。结果表明:海藻生根剂成品500倍液处理四季小白菜可以增加白菜苗的株高、叶面积以及提高四季小白菜苗的光合作用,从而提高产量;且明显提高小白菜叶片中硝酸还原酶的活性和根系活力。而不加海藻提取液的生根剂半成品作用不明显。可见,海藻生根剂500倍液处理为最优浓度处理。  相似文献