Effects of dietary mannan oligosaccharide on growth, body composition and hepatopancreas histology of Penaeus semisulcatus (de Haan 1844)

The effects of dietary mannan oligosaccharides (MOS) on growth, body composition and hepatopancreas histology of Penaeus semisulcatus (postlarvae stage 20) were investigated for 48 days. Different dosages of MOS (0, 1.5, 3.0 and 4.5 g MOS kg⁻¹) were tested in triplicate groups. Shrimp postlarvae averaging 0.34 ± 0.01 g attained 1.52 ± 0.31, 1.51 ± 0.15, 2.18 ± 0.13, 1.57 ± 0.13-g final weight and 42.7 ± 2.7, 37.3 ± 1.3, 64.0 ± 6.9, 50.7 ± 4.8% survival, respectively. At the end of the study, generally enhanced growth performance and feed conversion ratio were observed in shrimp fed on diet containing 3.0 g kg⁻¹ MOS with the highest final live weight (2.18 ± 0.13 g) and survival rate (64.0 ± 6.9%) after 48 days of feeding. The protein contents in the whole body decreased with increasing rates of dietary MOS (P < 0.05). Different levels of dietary MOS used in this study showed no detrimental effects on hepatopancreas tissue judged by histological screening. In conclusion, 3.0 g kg⁻¹ MOS could be used as a healthy growth promoter in shrimp diets.     

植物胶体与植物蛋白复配对午餐肉品质特性的影响

为改善传统午餐肉易软烂，质构松散的特性，以传统配方午餐肉为对照，选用魔芋胶、大豆分离蛋白及海藻酸钠为辅料进行复配优化，探究植物胶体与植物蛋白对午餐肉质构和感官品质的影响。结果表明，优化组的最佳配比为：魔芋胶添加量0.200%，大豆分离蛋白添加量2.687%，海藻酸钠添加量0.173%。优化组煮制前后的硬度、黏附性、弹性、咀嚼性均显著高于对照组（P＜0.05）。与对照组相比，优化组午餐肉煮制前后的组织形态和总体接受度评分均更高。研究表明植物胶体和植物蛋白的添加明显提高了午餐肉煮制前后的质构特性和感官品质。     

Prospective Alternatives of Antibiotics in Animal Diet

Antibiotics have been uded in animal feeding for long history.In recent years,much attention has been received for their negative effects on animal and human being as well.Technology has been focused on alternatives of antibotics,such as probiotics,oligosaccharides,acidifiers,Chinese herds,chemical drugs,and other environmental measures.Their mechanism,effects,relatd factors and their prospect in the future were discussed in this paper.     

低聚糖在饲料中的应用

本文综述了低聚糖的作用机制及其在饲料中应用效果的最新研究成果,旨在为低聚糖的开发、应用及研究提供理论基础。     

丝胶/海藻酸钠复合凝胶粒的制备及其结构性能表征

为了改良丝胶型药物载体的结构性能,将丝胶粉末与海藻酸钠溶液均匀混合后,采用氯化钙胶凝法制备了粒径为1.88 mm±0.15 mm的丝胶/海藻酸钠复合凝胶粒。红外光谱检测表明该复合凝胶粒中的丝胶与海藻酸钠之间以物理方式混和;差示扫描量热分析发现丝胶与海藻酸钠复合后,其结构稳定性有所提高;机械性检测表明丝胶/海藻酸钠复合凝胶粒具有更好的力学性能;溶胀性检测表明丝胶/海藻酸钠复合凝胶粒具有pH敏感溶胀性。研究结果表明丝胶/海藻酸钠复合凝胶粒使丝胶作为药物固定化载体的结构与性能得到改善,更有利于开发利用。     

功能性低聚糖的生理功能及其在食品中的应用

综述了功能性低聚糖的种类和生理功能,常见功能性低聚糖的性质及其在食品中的应用,并对其应用前景进行了展望。     

大豆突变体Gm-lpa-TW-1中低植酸性状与种子发芽率和糖份含量的相关性分析

为明确低植酸突变体Gm-lpa-TW-1植酸性状突变与种子发芽率降低以及糖份含量变化的相关性,选用低植酸突变体Gm-lpa-TW-1与不同野生型亲本的杂交后代,低植酸纯合株系（LPA）和非低植酸纯合株系（HPA）为研究材料,分析不同株系在不同种植环境下收获种子的发芽率、总糖、蔗糖和低聚糖的含量。结果表明：无论是LPA株...     

方便面油包可食用膜研究

探讨了海藻酸钠膜作为方便面油包可食用膜的可能性,并运用正交实验法研究了海藻酸钠膜的物理和机械性能,同时分析了海藻酸钠膜耐水性、抗拉强度及伸长率的影响因素.     

海藻酸钠涂膜对冷藏大枣品质的影响

[目的]探讨海藻酸钠涂膜对冷藏大枣品质的影响,为其贮藏保鲜提供参考.[方法]以扁核酸大枣为材料,采用不同浓度海藻酸钠对枣果进行涂膜处理,以蒸馏水浸泡为对照,分别置于5℃低温贮藏,探讨海藻酸钠涂膜对果实硬度、可溶性固形物含量、丙二醛(MDA)含量、相对膜透性、可滴定酸含量、维生素C(Vc)含量等品质指标的影响.[结果]与对照相比,海藻酸钠涂膜处理对大枣果实冷藏期间的品质变化有明显影响,可有效缓解枣果硬度及可滴定酸、Vc含量的下降,抑制枣果可溶性固形物、MDA含量及相对膜透性的升高;其中2.0％海藻酸钠处理的大枣果实品质含量变化幅度最小.[结论]5℃冷藏结合海藻酸钠涂膜可保持枣果品质,以2.0％海藻酸钠处理的保鲜效果最佳.