柑桔皮提取果胶

果胶为乳白色或淡黄色的不定型粉末,味微酸无异味,含水7～10％,溶于水,不溶于乙醇和其它有机溶剂,在180℃时分解。果胶分为 HM 果胶(高甲氧基果胶)和 LM 果胶(低甲氧基果胶)。HM 果胶经酯化处理可制得 LM 果胶。果胶广泛应用于食品增稠剂。HM 果胶可用于软糖,蜜饯,冰激凌,巧克力,饼干,蛋糕制品等做稳定剂和乳化增稠剂。LM 果胶适用于低糖食品,如水果制品,奶制品等。另外,LM 果胶还是用于预防重金属中毒的良好解毒剂,用于预防糖尿病,高血压等。     

从向日葵盘中提取果胶的研究

研究了从向日葵盘中提取果胶的新工艺。实验结果表明：所制得的果胶,其质量完全符合美国ＦＣＣ３标准。     

用铁盐法从柑桔皮中提取果胶

本文探讨了以柑桔皮为原料、用盐酸作萃取剂、铁盐作沉淀剂生产果胶的新方法——铁盐法。实验证明,该法产品成本低,最高产率可达20％。     

从柑桔皮中提取果胶的探讨

对从柑桔皮中提取果胶进行了研究和试验,讨论了各种因素对果胶质量和提取率的影响,找出了较佳的提取工艺条件。     

盐析法从柿子皮中提取果胶的最佳工艺条件研究

利用盐析法从柿子皮中提取食用果胶，并对其最佳工艺条件进行了研究，其特点是时间短、能耗小，有利于工业化生产。     

从柑桔皮中提取色素联产果胶的新工艺

用乙醇浸取柑桔皮经石油醚萃取和乙醇精制得油溶性色素和水溶性色素，残渣经酸水解、醇沉析制取果胶。果胶收率６％，质量符合ＧＢｎ２４６－８５标准，色素收率１１７％，含砷量≤０．０００１５％，含铅量≤０．０００３％。     

盐析法从鲜向日葵梗中提取果胶的工艺研究

研究了用盐析法从鲜向日葵梗中提取果胶，通过正交实验，对工艺条件进行了探讨     

橙皮中生物类黄酮的分离纯化工艺研究

橙皮中含有陈皮甙属二氢黄酮类,它最显着的作用是具有抗氧化性,因此可将其提纯后加入到食品中,制成具有抗自由基的功能性食品.     

酸水解法从栀子废渣中提取果胶的研究

研究了酸水解法从栀子废渣中提取果胶的工艺 ,对影响果胶产率的几个主要因素进行了正交试验 ,确定了提取果胶的最佳工艺条件 :提取温度为 1 0 0℃ ,提取时间为 90min ,提取液pH值1 .5 ,料液比 (栀子废渣与水的质量体积比 ,g∶mL)为 1∶3 0。     

A COMPARISON OF DIFFERENT TECHNIQUES FOR WATER-BASED EXTRACTION OF PECTIN FROM ORANGE PEELS

The extraction of pectin from orange peels has been studied using microwave and conventional extraction, with operating conditions including different extraction periods, different solvent pHs, and different types of solvent systems. The extracted pectin from orange peels was initially precipitated with concentrated ethanol and was quantified by the carbazole assay. For microwave extraction, the greatest total amount of pectin yield was found to be 5.27% on a dry basis for 15 minutes of extraction, although the greatest amount of material per unit time (%/min) was obtained after 5 minutes. This amount was the same as that extracted using Soxhlet extraction for three hours. The 15-minute microwave extraction period was further investigated at pH values of 1.5, 2.0, 5.5, and 10.0. The greatest amount of pectin was extracted from orange peels at the most strongly acidic condition of pH 1.5. The effect of a solvent system containing ethanol and EDTA (ethylenediamine tetraacetic acid) with a 15-minute extraction period and a pH of 1.5 was studied, giving approximately double the amount of pectin extracted using distilled water.     

A COMPARISON OF DIFFERENT TECHNIQUES FOR WATER-BASED EXTRACTION OF PECTIN FROM ORANGE PEELS

The extraction of pectin from orange peels has been studied using microwave and conventional extraction, with operating conditions including different extraction periods, different solvent pHs, and different types of solvent systems. The extracted pectin from orange peels was initially precipitated with concentrated ethanol and was quantified by the carbazole assay. For microwave extraction, the greatest total amount of pectin yield was found to be 5.27% on a dry basis for 15 minutes of extraction, although the greatest amount of material per unit time (%/min) was obtained after 5 minutes. This amount was the same as that extracted using Soxhlet extraction for three hours. The 15-minute microwave extraction period was further investigated at pH values of 1.5, 2.0, 5.5, and 10.0. The greatest amount of pectin was extracted from orange peels at the most strongly acidic condition of pH 1.5. The effect of a solvent system containing ethanol and EDTA (ethylenediamine tetraacetic acid) with a 15-minute extraction period and a pH of 1.5 was studied, giving approximately double the amount of pectin extracted using distilled water.     

液膜法提取单质金的迁移机理及其应用

本文研究了用磺化煤油作稀释剂时磷酸三丁酯从王水溶液中萃取Ａｕ的萃合比，证明了溶液中ＨＮＯ或ＮＯ＾－３在酸度小于３．０ｍｏｌ／ｄｍ６３时对ＴＢＰ萃取Ａｕ的萃合比没有影响，分析了液膜选择性迁移Ａｕ的机理；研究了以ＴＢＰ为载体的乳状液膜以王水为介质的含Ａｕ，Ｃｕ，Ｎｉ的电镀废水中的选择性回收Ａｕ，内水相得到纯度９９．９５的黑色粉末单质Ａｕ，一级回收率为９９．９％。．     

汽车漆膜桔皮病态及其防治

从表面化学的观点浅析涂膜内物料流动引起表面张力梯度的出现是产生汽车面漆桔皮缺陷的根本原因,提出了解决漆膜桔皮缺陷需要从材料、工艺、设备着手,并重点指出手工喷涂中排除桔皮的方法。     

利用苦瓜子衣废料制备食用色素的研究

对苦瓜子衣色素的提取工艺、稳定剂及主要成分的结构进行了研究。确定了最佳提取工艺条件,找到了一种不影响色素的色调并对色素有较好稳定作用的稳定剂,经初步鉴定,该色素至少含有两种主要成分,分别为β 胡萝卜素和番茄红素。