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使用热分析方法研究化学改性剂对淀粉性质的影响 被引量:1
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作者 poonam aggarwal David Dollimore 王亚娟(编译) 《西部皮革》 2011年第10期38-41,共4页
经过化学改性后的玉米淀粉应用范围很广,目前主要应用在制药及食品行业。本研究中,对从玉米淀粉中提取出的直链淀粉和支链淀粉做了阳离子化改性处理,即使用季铵盐处理原淀粉得到不同的改性产品,并将这些阳离子化改性淀粉与未改性的原淀... 经过化学改性后的玉米淀粉应用范围很广,目前主要应用在制药及食品行业。本研究中,对从玉米淀粉中提取出的直链淀粉和支链淀粉做了阳离子化改性处理,即使用季铵盐处理原淀粉得到不同的改性产品,并将这些阳离子化改性淀粉与未改性的原淀粉做了比较。同时本实验也研究了原淀粉及改性淀粉的热力学行为,同时使用TG-DTA及DSC测试手段对该改性淀粉的热降解行为进行表达,本文的一个目的也是将这些原淀粉进行表面阳离子化处理,进而制定一套对改性淀粉及未改性淀粉的分析测试方法。 展开更多
关键词 改性淀粉 热重分析
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Techno and bio functional characterization of industrial potato waste for formulation of phytonutrients rich snack product 被引量:1
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作者 Lovepreet Singh Sukhpreet Kaur poonam aggarwal 《Food Bioscience》 SCIE 2022年第5期1061-1071,共11页
Present study aimed at utilizing potato industry waste(potato peel and mash)to improve the phytonutritional profile of chickpea flour-based snack product gathiya.Potato waste was converted into powders and studied for... Present study aimed at utilizing potato industry waste(potato peel and mash)to improve the phytonutritional profile of chickpea flour-based snack product gathiya.Potato waste was converted into powders and studied for their respective biochemical and functional properties.Characterization of potato peel powder showed high crude fiber(13.05%),protein(13.15%),and bio-functional properties(834.24 mg GAE/g total phenols and 247.18 mg QE/mg total flavonoids)while mash powder exhibited high techno-functional potential as water(4.11 g/g)and oil absorption capacity(1.70 g/g).Mash and peel powders were incorporated in chickpea flour at different concentrations for formulation of snack.Compared to control,addition of these powders considerably(p<0.05)improved the hardness(54%decrease),minerals(21%increase)and fiber content(71.7%increase)and phenolic compounds(54.4%increase)as confirmed using FTIR and HPLC analysis.Based on desirable sensory attributes,gathiya prepared with addition of 5%potato peel powder and 20%potato mash powder was selected for product development and shelf-life studies.All bioactive constituents decreased(p<0.05)during storage while an increase in antioxidant activity was observed in stored product.Due to high antioxidant potential of potato peels,lower lipid oxidation values were noticed for potato waste enriched snack throughout the storage and the product was shelf stable at room temperature for six months without impacting quality.The utilization of potato waste in prepared product can provide dual benefit of producing healthy phytonutrients rich snack product along with solving the problem of solid waste dispersal of potato processing industry. 展开更多
关键词 Potato peel Functional properties Phytonutrients Antioxidant potential HPLC
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Intermediate moisture kinnow bar from low grade kinnow mandarins:Phytonutritional profile,morphological characterization,and storage stability
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作者 poonam aggarwal Sukhpreet Kaur Navjot Kaur 《Food Bioscience》 SCIE 2022年第5期1051-1060,共10页
Low grade kinnow have less commercial value but are rich in bioactive compounds and have enough potential for value addition.The present study aimed at utilizing kinnow juice extracted from low-quality kinnow to devel... Low grade kinnow have less commercial value but are rich in bioactive compounds and have enough potential for value addition.The present study aimed at utilizing kinnow juice extracted from low-quality kinnow to develop a convenient ready-to-eat phytonutrients-rich fruit bar.Pectin was added at different concentrations(1-4%)to improve the quality of the formulated bar.Increasing the pectin levels increased the hardness of formulated bars while decreasing moisture and water activity,without affecting color and nutritional properties.Developed bars showed high minerals and phytochemical constituents(8.41 mg/100 g ascorbic acid,591.48 mg GAE/100 g total phenolic,388.56 mg QE/100 g total flavonoids,3.28 mg/100 g total carotenoids,20 ppm limonin,and 68.12%antioxidant activity)as confirmed using colorimetric and ICP-AES analysis.The microstructure of the bars was consistent with the texture values.Based on desirable sensory and textural properties,kinnow bars formulated with 4%pectin was selected for product development and evaluation of shelf life under room(25±2◦C)and refrigerated(4±2◦C)conditions.A significant(p<0.05)difference was observed in physicochemical,phytochemical,and microbiological attributes during storage at both temperatures.However,the loss of quality was rapid at room temperature.Kinnow bars were shelf-stable for up to 4 months at room temperature and 6 months under refrigeration conditions,respectively.Valorization of low grade kinnow can provide the dual benefit of producing phytonutrient-rich snack product along with kinnow waste management. 展开更多
关键词 Kinnow Fruit bars Phytonutrients PECTIN Shelf life
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