化学剂去皮法分离香豆胶

本文报道化学剂去皮法分离香豆胶的室内实验研究结果。将香豆用化学剂浸泡、清水冲洗除去种皮，再用机械方法将去皮香豆分离为内胚乳和胚。分出的内胚乳片即香豆胶片，种皮和胚为下脚料。香豆胶的收率可高达３３％－３８％，且较纯净，不含杂质。用双化学剂脱皮后分离出的香豆胶片，其增粘能力高于现行行业标准对一级香豆胶粉规定的指标。从工艺技术、经济等方面考察，该法可以实现工业化。以去皮所用某些化学剂处理目前市售香豆胶片，可使其增粘能力接近和超过瓜尔胶片。     

Functional properties of fenugreek (Trigonella foenum graecum) protein concentrate

Proximate composition and physicochemical properties of a protein concentrate prepared from fenugreek seed were determined. The effects of pH and/or NaCl concentration on these properties were investigated. The protein content of fenugreek was found to be 28.4%. The crude fibre content was 9.3% and crude fat was 7.1%. The minimum protein solubility was observed at pH 4.5, which was 18.5%, while maximum protein solubility was observed at pH 11, which was 91.3%.     

钛交联植物胶高温压裂液的关键性能

本文介绍了钛交联植物胶高温压裂液体系的关键性能即耐温能力、破胶及对地层和裂缝的伤害的实验研究结果。     

香豆硼冻胶压裂液

本文论述了香豆硼冻胶的组成、性能及现场试验情况。室内试验及现场实践表明，香豆硼冻胶是一种流变性好、摩阻低、易破胶、低残渣、低伤害、适用于８０℃以下低温及中温的优良压裂液。     

Fenugreek (Trigonella foenum-graecum): A Review of Health Beneficial Physiological Effects

Among the spices that are esoteric food adjuncts being used to enhance flavoring and color, fenugreek (Trigonella foenum-graecum) also modifies the texture of food. This seed spice is also employed for medicinal purpose in many traditional systems as antibacterial, gastric stimulant, against anorexia, antidiabetic agent and as a galactogogue. In recent decades, several health beneficial physiological attributes of fenugreek seeds have been seen in animal studies as well as human trials. These include antidiabetic effect, hypocholesterolemic influence, antioxidant potency, digestive stimulant action, and hepatoprotective effect. Among these beneficial physiological effects, the antidiabetic and hypocholesterolemic property of fenugreek, both of which are mainly attributable to the intrinsic dietary fiber constituent, have promising nutraceutical value. This article presents an overview of experimental evidence for the nutraceutical potential of fenugreek seeds.     

食品级胡芦巴胶及其降血糖功效的研究

本文研究了胡芦巴种子中提取食物级胡芦巴胶的工艺技术，并就食品级胡芦巴胶对体内血糖水平的作用进行了动物实验，食品级胡芦巴胶对Ⅱ型糖尿病鼠有显著的降血糖作用，其降血糖功效比胡芦巴种子提高10倍以上。     

Covalent attachment of fenugreek gum to soy whey protein isolate through natural Maillard reaction for improved emulsion stability

Soy whey protein isolate (SWPI)–fenugreek gum (hydrolyzed and unhydrolyzed) conjugates were prepared by Maillard-type reaction in a controlled dry state condition (60 °C, 75% relative humidity for 3 days) to improve emulsification properties. Fenugreek gum was partially hydrolyzed using 0.05 M HCl at 90 °C for 10 min (HD10), 30 min (HD30) and 50 min (HD50) to examine if molecular weight had an effect on the emulsifying properties. The formation of SWPI–fenugreek gum conjugates was confirmed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Measurements of particle size distribution and average particle size have shown that conjugation of SWPI–fenugreek gum at 60 °C for 3 days was enough to produce relatively small droplet sizes in oil-in-water (o/w) emulsions. A ratio of 1:3 and 1:5 of SWPI:fenugreek gum was more effective in stabilizing emulsion compared to 1:1 ratio. Unhydrolyzed fenugreek gum conjugates exhibited better emulsifying properties compared to partially hydrolyzed fenugreek gum conjugates. The order of the conjugates in lowering the particle size of emulsions was as follows: SWPI–unhydrolzed fenugreek gum > SWPI–HD10 > SWPI–HD30 > SWPI–HD50.     

Facile and green synthesis of cobalt oxide nanoparticles using ethanolic extract of Trigonella foenumgraceum (Fenugreek) leaves

Cobalt oxide nanoparticles (Co₃O₄ NPs) were successfully synthesized using ethanolic extract of Trigonella foenumgraceum L. (fenugreek) leaves as a green, potentially low cost, and easily biosynthesized method. The organic bioactive compounds present in fenugreek leaves extract acted as both reducing agents and stabilizing agents for synthesizing metal NPs from cobalt chloride hexahydrate as a precursor. As evidence from UV/Visible spectroscopy, energy dispersive spectroscopy (EDS), and X-ray diffraction analysis (XRD) studies, high alkaline pH was found favorable for the preparation of pure and crystallized single-phase Co₃O₄ NPs. The interaction of biomolecules from fenugreek leaves extract with Co₃O₄ NPs was defined by Fourier transform infrared spectroscopy (FTIR) analysis and X-ray photoelectron spectroscopy (XPS). The hydrodynamic size and surface charge of the biosynthesized NPs were measured using light-scattering (DLS) and zeta potential analyses; revealed the formation of negative charged Co₃O₄ NPs with uniform hydrodynamic size distribution. According to transmission electron microscopy (TEM) analysis, quasi-spherical Co₃O₄ NPs were synthesized with an average size of 13.2 nm under the modified condition of pH 12 and reaction time of 2 h through inexpensive, environmental friendly benign synthesis process without the use of any additional toxic chemical.     

香豆胚乳片加工工艺及设备的研究

根据香豆种子的结构特点,提出了一种新型的香豆胚乳片加工工艺及设备。该工艺流程是根据种子各组成的加工特性分步进行处理,研制了新型的子叶分离装置和搓碾组合机组设备,提高胚乳的回收率和纯净率。通过此工艺,香豆胶的回收率和性能上有了明显的提高,胶的回收率高达90%以上,黏度性能指标45~90mPa.s各档次产品均可获得,满足不同客户的要求,其中黏度≥80mPa.s、水不溶物≤10%的香豆胶,达到石油部标准。     

葫芦巴挥发油成分的GC-MS质谱分析

采用气相色谱-质谱联用技术结合计算机标准谱库检索,对由超临界萃取获得的葫芦巴挥发油化学成分进行鉴定,结合质谱数据库对分离的化合物进行结构鉴定,并通过总离子流色谱图的面积归一化法计算各成分的相对含量。从葫芦巴挥发油中共鉴定出26种化合物,葫芦巴挥发油的化学成分分析结果有助于发现葫芦巴挥发油的特征性成分,为针对性的提取分离挥发油中的化合物提供参考。