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国内外贝类加工流通研究动态 总被引:1,自引:0,他引:1
贝类是一种美味又具有多种保健功能的食品,其加工、流通引起世界众多学者的关注.本文介绍了国内外有关贝类的净化、保活、低温流通及其冷冻品、干制品、调味品、罐藏品、即食品、贝壳利用的加工研究情况;同时还介绍了国内外贝类功能食品的开发及其多糖的提取利用研究概况,可供贝类加工技术人员和研究人员参考. 相似文献
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茂名市濒临南海,海岸线长达220km,滩涂面积8494hm^2,浅海(0~20m)面积104726hm^2,是蛤、东风螺等多种贝类繁衍、养殖、增殖的好地方,海水增养殖业前景美好。过去由于受重鱼虾轻贝类的思想影响,沿海贝类增养殖业发展慢,这与丰富的浅海滩涂资源不相适应。 相似文献
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海洋贝类三倍体育种的原理和方法 总被引:2,自引:0,他引:2
<正> 海洋贝类在海洋生物类群中占有重要的地位,有许多经济种类已被广泛地进行人工养殖。因此,运用现代生物学手段为养殖单位提供具有多种优良性状的苗种显得十分重要。已有的资料表明,海洋贝类三倍体的生长速度快、抗病力强等多种性状均优于二倍体个体。基于此,海洋三倍体育种越来越引起重视,许多学者在海洋贝类三倍体育种方面进行了大量的研究,并已取得了许多成果。本文拟就海洋贝类三倍体育种的原理及方法作一综述,以期推动这项研究工作在我省深入开展,为经济建设服务。 相似文献
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饵料藻类对贝类育苗的影响 总被引:5,自引:0,他引:5
藻类是贝类育苗的关键因素之一。作为贝类育苗的饵料藻类有多种,不同的藻类对贝类幼虫的食用效果不一样,单独投喂藻类和混合投喂也会产生不同的生长状态。饵料藻类从多方面影响着贝类幼虫的生长、成活、附着变态。 相似文献
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海参多糖的分离纯化方法及其主要生物活性 总被引:7,自引:0,他引:7
海参(Sea cucumbers)是民间珍贵的药膳食品,海参体壁中含有的多糖成分具有抗肿瘤、抗血凝、抗衰老、抗放射、增强免疫力等多种生理功能.本文介绍了海参多糖的分离、提取、纯化及纯度鉴定方面的相关技术,阐述了海参多糖主要生物活性及开发途径,并提出其研发方向. 相似文献
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Meng Cao Jiaming Kang Yumei Gao Xiuhai Wang Xiaoyan Pan Pinghuai Liu 《Aquaculture Research》2020,51(6):2456-2471
On the basis of multiple single‐factor studies, the best conditions for each factor were selected by comparison. Taking the biomass, polysaccharide and protein yields of chlorella as response values, the four‐factor and three‐level response surface design experiment was performed on four parameters that significantly affected the response values to further determine the optimal conditions. The optimal parameters of the culture process were nitrogen source (urea), carbon source (sodium carbonate), nitrogen concentration (15.80 mmol/L), carbon concentration (0.36 mmol/L), phosphorus concentration (0.2 mmol/L), magnesium concentration (0.33 mmol/L), calcium concentration (0.25 mmol/L), iron concentration (0.02 mmol/L), initial pH (7.0), inoculation amount (6%) and ventilation capacity (40 L/hr). According to this process, the biomass, polysaccharide and protein yield of Chlorella sorokiniana obtained from indoor culture were close to the predicted value, which were more than three times as much as before, reaching 3.58, 0.52 and 0.46 g/L respectively. Chlorella sorokiniana, which was cultured outdoor according to the optimized process, increased its biomass, polysaccharide and protein yield by more than 1.5 times. Chlorella sorokiniana was significantly different before and after optimized culture. This provides a good source for the research of polysaccharide and protein of C. sorokiniana and helps the further study of its structure and biological activity, which makes the further development of its function more possible. 相似文献
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介绍了海洋生物多糖的种类——海洋动物活性多糖、海洋植物活性多糖、海洋微生物活性多糖,阐述了海洋生物多糖对水产动物的生理功用,指出了海洋生物多糖在水产养殖中的应用前景和展望,这对配制、推广应用高效环保型、功能性水产配合饲料,促进水产养殖业的健康、可持续发展,具有参考意义。 相似文献
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A study of the discrete and interactive effects of different polysaccharides on the digestibility of diets fed to barramundi (Lates calcarifer) 下载免费PDF全文
This study examined the single, paired and combined inclusion effect of a range of different polysaccharide types on the dry matter, protein and energy digestibility of diets fed to barramundi (Lates calcarifer). The different polysaccharides included pregelled starch, cellulose, lignin and pectin. There were significant differences among the digestibility parameters of the diets with the different inclusion levels of each of the different polysaccharide types. Using a manova analysis, effects were noted for polysaccharide type, inclusion level and interaction terms on the digestibilities of dry matter, protein and energy. Cellulose addition resulted in a reduction in both dry matter and energy that was largely commensurate with its inclusion level, but its effect on protein digestibility was marginal. Starch had the least effect on any of the digestibility parameters of all the polysaccharide types examined. Pectin had the largest effect on dry matter, while lignin had the greatest impact on diet protein and energy digestion. In the diets with paired combinations of polysaccharides, lignin and pectin were responsible for negatively synergistic interactions in all digestibility parameters. These results show that different polysaccharide classes can have distinctly different effects on diet digestibility parameters. 相似文献
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多糖是指由10个以上的单糖分子脱水缩合而成的一类结构复杂且庞大的糖类物质。不同种类的多糖有着独特的理化性质和生物活性,这与多糖的结构密切相关。为了改善多糖的诸多性能,人们常对天然多糖进行分子修饰或改性。本文综述了目前国内外有关天然多糖常见的改性方法及其研究进展。 相似文献
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研究了浒苔多糖样品经三氟乙酸完全水解而无损失的最适条件,并且在优化流动相洗脱程序等色谱条件的基础上,建立了1-苯基-3-甲基-5-吡唑啉酮(PMP)柱前衍生-高效液相色谱法分析浒苔多糖的单糖组成及含量的方法。该方法采用配备紫外检测器的高效液相色谱仪,在250 nm波长下进行测定,外标法定量。结果表明,在此条件下,8种单糖能够良好分离,各单糖在1-100μg/ml范围内具有良好的线性关系,相关系数r≥0.999,回收率在76.0%-108%之间,相对标准偏差RSD10%。采用该方法对浒苔多糖样品进行组成及含量分析,发现无论样品原料为何种浒苔,浒苔多糖均以鼠李糖为主,同时还含有葡萄糖醛酸、葡萄糖、木糖、半乳糖以及少量的甘露糖、半乳糖醛酸和岩藻糖。 相似文献
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植物多糖的提取方法和工艺 总被引:36,自引:0,他引:36
多糖的生物活性倍受关注,其提取方法及工艺已成为目前研究焦点之一。在植物多糖提取的研究中采用了许多不同的方法,包括溶剂提取法、酸提法、碱提法、酶解法、超滤法、超声波强化法、微波法。本文对这些方法在不同多糖提取上的运用进行综述,以期为该领域的生产和研究工作者提供参考。 相似文献
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本文研究琼枝多糖凝胶的结构和性质。大多数碱金属盐、碱土金属盐和含二个氨基以上的化合物能够改良这种带负电荷的多糖凝胶的性能。从扫描电子显微镜研究各种凝胶的结果看出,琼枝多糖象绞合的纤维束同方向地聚集;琼枝多糖-KCl凝胶象疏松绞合着的纤维束同方向聚集;琼枝多糖-乙二胺凝胶象多锁链同方向聚集;琼枝多糖-明胶凝胶却象海绵一样网状聚集。根据试验结果,作者对琼枝多糖形成凝胶的机理进行了推断。 相似文献