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Encapsulation in the Food Industry: A Brief Historical Overview to Recent Developments

Food and nutrition Sciences 2020年第6期11卷 481-508页

作者： Yakindra Prasad Timilsena Md. Amdadul Haque Benu Adhikari nu-mega ingredients pty ltd. Melbourne Australia Department of Agro-Processing Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh School of Science RMIT University Melbourne Australia

Encapsulation in food industry serves several functions including masking of undesirable color/flavor/taste, preservation of unstable constituents, incorporation of additional functional and nutritional components and site-specific release of encapsulated ingredients at a controlled time and rate. The knowledge of microencapsulation in other sectors like pharmaceutical industry is well advanced;however, more understanding is required to harvest the maximum benefits from food industry. This paper started with highlighting the gradual progress of microencapsulation process in food industry and ended up with some invaluable suggestions for future works. In the body, the paper reviews the major techniques of food encapsulation, choices of coating materials and the performance measurement methods of food encapsulation. Future trends, scopes and aspects of microencapsulation process in food manufacturing sector are also presented as the necessary recommendations for future researches. The article would help the microencapsulated food manufacturers to choose the target oriented encapsulates and suitable encapsulation technique.

关键词： Microencapsulation Shell Materials Core Materials Encapsulation Techniques Encapsulation Efficiency Controlled Release

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Effect of Biscuit Baking Conditions on the Stability of Microencapsulated 5-Methyltetrahydrofolic Acid and Their Physical Properties

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Food and nutrition Sciences 2012年第10期3卷 1445-1452页

作者： Ashok K. Shrestha Jayashree Arcot Sushil Dhital Sarah Crennan Centre for nutrition and Food Sciences The University of Queensland St. Lucia Brisbane Qld 4072 Australia Food Science and Technology School of Chemical Sciences and Engineering The University of New South Wales Sydney 2052 Australia nu-mega ingredients pty ltd Eight Miles Plain Queensland 4113 Australia School of Science and Health The University of Western Sydney Hawkesbury Campus Richmond NSW Australia

Among the folate compounds, 5-methyltetrahydrofolic acid (5-CH3THF) is regarded as one of the most bioactive forms of folate. It is regarded as the better source of folate to humans as compared to folic acid, a synthetic form of folate, which is used for fortifying foods to prevent the incidence of neural tube defects in the new born babies. The use of 5-CH3THF as an alternative fortificant, in place of folic acid, has been explored by various researchers. However, fortification of 5-CH3THF is problematic due to its lower stability. This study investigated the stability of microencapsulated 5-CH3THF in biscuits baked at various temperatures and times as well as changes in their physical properties. Microcapsule with pectin and alginate ratio of 80:20, prepared by spray drying, gave the highest retention (68.6%) of the 5-CH3THF, therefore, chosen for fortification. The encapsulated and unencapsulated 5-CH3THF were mixed separately with flour and biscuit ingredients and baked at 180℃, 200 and 220℃, each for 5, 9 and 12 min. The inclusion of encapsulated and unencapsulated 5-CH3THF in the biscuit formulation and subsequent baking at various temperatures and times resulted in retention of 5-CH3THF from 19.1% to 1.7%. Microencapsulation of 5-CH3THF slightly improved the retention of 5-CH3THF over unencapsuated biscuits at 180℃ for 5 min, but almost no such effect was achieved under baking temperatures of 200℃ and 220℃. Physical analysis showed darker colour, harder texture and lower moisture content for biscuits baked at higher test temperatures. It seems intense heating condition that caused “over baking” of the biscuit likely to be responsible for the loss of the vitamin as well as less desirable physical properties of the biscuits.

关键词： 5-Methyltetrahydrofolic Acid Fortification Thermal Stability Microencapsulation Baking

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Breeding and Evaluation of New Iron Yam (Dioscorea opposita Thunb) Varieties

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Agricultural Science & Technology 2015年第10期16卷 2121-2125页

作者： Sufang DUAN Jianjun LI Meiling REN Jun WANG Guolun JIA Shuwu SUN People's Park of Xinxiang Engineering Technology Research Center of nursing and Utilization of Genuine Chinese Crude Drugs College of Life ScienceHenan Normal University Henan Bai Liao Huai Medicine Science and Technology Development Co. Ltd.

[Objective] This study was conducted to develop some new iron yam （Dioscorea opposita） varieties with excellent cooking, eating and nutritional qualities. [Method] The fresh weight per plant, drying rate, dry weight per plant, yield, allan- toin content, water soluble extract content and disease resistance of seven new iron yam cultivars （No.1, No.2, No.4, No.6, No.8, No.9 and No.10） obtained through spaceflight mutation breeding were measured and compared with control （No.11）. Then, the nutrition quality of two elite cultivars No. 6 and No.10 was determined by comparing with the control. [Result] The eight iron yam cultivars ranked in descend- ing order of their fresh weight per plant as follows： No.6（0.255 kg）〉No.10（0.254 kg）〉 No.4（0.242 kg）〉No.9（0.237 kg）〉No.1（0.233 kg）〉No.11（0.206 kg）〉No.2（0.191 kg）〉No.8 （0.157 kg）. There was no significant difference in fresh weight per plant between No.6 and No.10, but extremely significant difference between No.6 and the control, No.10 and the control. The eight iron yam cultivars ranked in descending order of their drying rate as follows： No.2 （32.641%）〉No.10 （32.230%）〉No.9 （28.223%）〉No.6 （25.174%）〉No.8（25.122%）〉No.11 （25.043%）〉No.1 （24.291%）〉No.4（20.234%）. The dry- ing rate of both No.6 and No.10 was higher than that of the control. The eight iron yam cultivars ranked in descending order of their dry weight per plant as follows： No.10（0.082 kg）〉No.9（0.067 kg）〉No.6（0.064 kg）〉No.2（0.062 kg）〉No.1（0.056 kg）〉No.11 （0.052 kg）〉No.4 （0.049 kg）〉No.8 （0.039 kg）. The dry weight per plant of both No.6 and No.10 is higher than that of the control. The eight iron yam cultivars ranked in descending order of their allantoin content as follows No.6 （0.484%）〉No.4 （0.467%）〉 No.10 （0.399%）〉*** （0.386%）〉No.9 （0.378%）〉No.8 （0.350%）〉No.2 （0.342）〉No.1 （0.325%）. The allantoin content of No.6 was significantly higher than that of No.10 and the control. There was significant difference in allantoin content between No.6 and No.10, but no significant

关键词： Iron yam New cultivar Breeding Production Medicinal ingredients nu- trition quality

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