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外界因子对豆腐柴叶豆腐形成的影响 总被引：2，自引：1，他引：2
对豆腐柴叶豆腐形成的主要外界影响因子作了探讨,结果表明:豆腐柴叶制备的滤汁的鲜叶比水(w/v)为1∶8~1∶10,干叶粉比水(w/v)为1∶25~1∶30较为合适;添加0.02%~0.04%Mg2 或Ca2 能形成胶凝强度适中的叶豆腐,K 、Na 、Cl-、CO32-无促胶凝作用;在90℃加热30min不破坏被其叶滤汁胶凝特性;调整滤汁pH在4~5之间,能形成固定形态,质地均匀的叶豆腐;葡萄糖酸内酯有促胶凝作用,而琼脂仅起凝固作用,形成的叶豆腐弹性小,韧性差。 相似文献
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以2种人工栽培豆腐柴叶为材料进行研究,采用咔唑比色法、蒽酮比色法、微量凯式定氮法、索式抽提法、分光光度法等方法分别对豆腐柴叶中的果胶、可溶性糖、粗蛋白、粗脂肪、维生素C、膳食粗纤等营养成分的含量进行测定,并采用氨基酸分析仪和原子吸收光谱法,分别对豆腐柴叶中的氨基酸和矿物质元素进行测定。以此,分析评价重庆豆腐柴叶的营养价值,并且对重庆豆腐柴在营养价值上是否存在地区优势进行比较。为重庆地区合理利用豆腐柴资源提供科学理论依据。实验数据表明,Ⅱ号豆腐柴叶营养价值优于Ⅰ号豆腐柴叶,其果胶含量（干叶）16.09%,可溶性糖含量4.57%,粗蛋白含量13.52%,粗脂肪含量5.38%,维生素C含量0.33%,膳食粗纤含量35.05%,β胡萝卜素含量0.059%,总氨基酸含量132.89mg/g。 相似文献
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利用磷酸二氢钾、镁渣、缓凝剂制备磷酸钾镁胶凝材料,研究了磷镁比、水胶比、缓凝剂掺量、养护方式对胶凝材料性能的影响。试验结果表明：随着磷镁比的减小,胶凝材料的抗压强度先增大,后减小,磷镁比为1:1时,抗压强度达到最大;水胶比对胶凝材料的力学性能影响较大,随着水胶比的增加,抗压强度先增大,后减小,当水胶比为0.20时,抗压强度达到最高;硼砂能够起到较好的缓凝效果,缓凝剂的掺量为7%时,胶凝材料的凝结时间为11 min, 7 d抗压强度为10.29 MPa;与水中养护、密封养护、标准养护相比,自然养护为最佳养护方式。 相似文献
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以松仁油微胶囊和牛乳为原料，制备凝固型酸奶。以pH值和感官评价分数为指标，通过单因素试验和正交试验，探究松仁油微胶囊添加方式、微胶囊添加量、白砂糖添加量、发酵时间、发酵温度、稳定剂种类、稳定剂温度以及稳定剂添加量对酸奶品质的影响，并得出最加配方和工艺参数；松仁油微胶囊乳液添加量为0.05 g/mL,CMC添加量为0.15%,白砂糖添加量为8.5%,发酵剂添加量为3%,在38℃下发酵6 h,并在4℃下后熟24 h。以最优工艺条件制作松仁油微胶囊酸奶，进行贮藏稳定性试验，结果发现：添加松仁油微胶囊的酸奶在贮藏期内保持较好的pH值、粘度、持水力、乳酸菌活菌数量。研究制作的松仁油微胶囊不仅能提高酸奶营养价值，对酸奶保存期间的稳定性也有一定的保持作用。 相似文献
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Akiko Sasaki Shozo Shikenya Kazuhiko Takeda Takayuki Nakatsubo 《Journal of Forest Research》2007,12(1):68-74
To estimate the importance of leaching of dissolved organic matter (DOM) as a pathway through which organic matter is supplied
to stream ecosystems, we examined the amount of leachate over time and chemical properties of DOM leached from leaves in different
conditions. The samples used were green leaves, yellow senescent leaves, and leaf litter of Salix gracilistyla Miq., which is the dominant riparian plant species in the middle reaches of rivers in western Japan. We analyzed dissolved
organic carbon (DOC), total sugar, and polyphenol in the leachate of leaf samples collected from a fluvial bar in the middle
reaches of the Ohtagawa River in Hiroshima Prefecture, Japan. Considerable leaching of DOC from senescent leaves [37.3 mg g−1 dry weight (dw) leaf] and leaf litter (8.1 mg g−1 dw leaf) occurred within 24 h after immersion. In contrast, DOC leached from green leaves was negligible until 1 week after
leaf immersion. Carbon loss of leaves by leaching within 24 h after leaf immersion was estimated to be less than 8%, suggesting
that leaching of DOC from S. gracilistyla leaves is a minor pathway through which organic matter is supplied to stream ecosystems. DOM leached from the leaves included
sugar and polyphenol, which were among the major chemical forms of DOM leached from the leaves (based on the molecular mass).
In a laboratory experiment in which the difference in the stability of DOM between the chemical forms was examined, sugar
decomposed more rapidly than polyphenol. 相似文献
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采用室内盆栽试验,研究不同程度水分胁迫24 d对新西伯利亚银白杨叶片光合生产力和渗透调节物质含量的影响.结果表明：水分胁迫抑制了新西伯利亚银白杨幼苗叶片的光合能力,提高了叶片细胞中可溶性蛋白质含量,并影响了叶片中可溶性糖含量.随着胁迫强度和胁迫时间的增加,叶片净光合速率、蒸腾速率和气孔导度均显著减小.叶片净光合速率与蒸腾速率和气孔导度呈极显著正相关关系,与土壤含水量呈显著正相关关系.气孔导度蒸与腾速率呈极显著正相关关系,与土壤含水量、可溶性糖含量呈显著正相关关系.蒸腾速率与可溶性糖含量呈显著正相关关系.在土壤相对含水量≥25％的条件下,净光合速率下降主要由气孔因素导致.在土壤相对含水量＜25％的条件下,净光合速率下降主要由非气孔限制导致. 相似文献
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Dr. A. Bozsik 《Journal of pest science》1996,69(1):21-22
Undiluted cold water extract of stinging nettle (Urtica dioica) with an extraction time of 24 h, a fermenting extract of the same plant with an extraction time of 6 days were tested against the aphids of plum (Prunus domestica), red currant (Ribes rubrum) and spiraea (Spiraea vanhuottei) in the field. The efficiency of the preparations was calculated according to the Abbott and Henderson-Tilton formulas. Data were analyzed statistically by one way ANOVA.The cold water extract had no significant effect on theHyalopterus pruni andCryptomyzus ribis populafermenting extract hardly influencedH. pruni but it showed an about 80% — but not significant—efficiency againstAphis spiraephaga.With 4 tables 相似文献
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以赪桐（Clerodendrum japonicum）扦插苗为材料,研究了 3 种光照强度：100% 光照强度
（CK）、36.1% 光照强度（3 针遮荫网遮荫）和 17.8% 光照强度（6 针遮荫网遮荫）处理条件下的生长及光
合特性。结果表明：遮荫处理下,赪桐苗高、地径增长量、地下部分干质量和地上部分干质量显著增加
（P<0.05）;随着光照强度的减弱,赪桐的叶面积、叶周长、根长、根表面积、根体积和 SPAD 值显著增
加（P<0.05）;与对照处理相比,17.8% 光强处理下赪桐的表观量子效率（AQY）增加,光补偿点 (LCP)
和暗呼吸速率 (Rd) 降低。该研究表明,赪桐具有较强的耐荫性及对弱光的利用能力;遮荫能促进赪桐生
长;100% 光照条件会抑制其生长,17.8% 光照强度更适宜赪桐生长。 相似文献
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A study was conducted to determine the effects of electrostatic field (ESF) treatment on seed germination and seedling growth
of Sorbus pohuashanesis. The experiments were arranged by uniform design computed by the Data Processing System (DPS), including three levels of
seeds soaking time, four levels of ESF intensity and four levels of ESF treatment time, with 12 treatments. Ten seeds were
used in each treatment with three replicates. Seed vigor, seed germinating ability, emergence rate of seedling, survival rate
of seedling, and seedling height and diameter, as well as the change in activities of superoxide dismutase (SOD), soluble
protein contents, total chlorophyll contents, soluble total sugar contents in leaves of S. pohuashanensis seedlings were measured after ESF treatments. The experiment results show that ESF treatment could improve the water absorption
ability of dry seeds of S. pohuashanensis, resulting in fast germination at room temperature under light conditions. Combined treatment of ESF with cold stratification
could increase seed germination percentage significantly (to 42.20%), promote seedling height growth, affect leaf SOD activity,
and could raise contents of total chlorophyll, soluble protein, and total soluble sugar in leaves. Seed soaking time had a
significant effect on seed relative electroconductivity, seed germination under light, SOD activity, soluble protein content
and total soluble sugar content of seedling leaves. ESF intensity exerted a moderate effect on these indexes. ESF treatment
time only had significant effect on total chlorophyll contents, no evident effect on other indexes. 相似文献