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    Microencapsulation of Litsea cubeba Essential Oil in β-Cyclodextrin Using Paste and Co-Precipitation Methods 

    Elizei, Pooyan Shakouri; Wunwisa Krasaaekoopt (2014)

    Microencapsulation of Litsea cubeba essential oil (LCEO) with β-cyclodextrin (BCD) was carried out using the paste and co-precipitation methods at various oil concentrations and ratios of LCEO to BCD adapted from a central composite design to determine the effect of these factors on the microencapsulation efficiency, microencapsulation yield, surface oil and recovery of the finished product. In addition, the effect of different levels of water activity and temperature on the oxidative stability of the powder was investigated. Treatment 4 u...
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    Microencapsulation of Saffron (Crocus sativus L.) Extract in Copolymer Complexes Using Extrusion Method 

    Shakoori, Pooria; Wunwisa Krasaekoopt (2015)

    This study describes the preparation of alginate-chitosan and alginate-gelatin beads containing saffron components to be incorporated as additives in food products. This study evaluated the influence of incorporating hydrophilic natural polymers, alginate-chitosan and alginate-gelatin on preserving saffron components. The alginate beads were coated with chitosan and gelatin as copolymer by extrusion method with a polyelectrolyte complex reaction between two oppositely charged poly-ions. The beads were formulated, optimized and evaluated ...
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    Investigating the Effect of Cold Soak Duration on Phenolic Extraction during Cabernet Sauvignon Fermentation 

    Siriwan Panprivech; Lerno, Larry A.; Brenneman, Charles A.; Block, David E.; Oberholster, Anita (2015)

    The impact of increasing cold soak (CS) duration (0, 1, 4, 7, and 10 days at 10 °C) on the extraction of phenolic compounds during the CS period and primary fermentation as well as the final composition of Cabernet Sauvignon wine was investigated. The results showed that CS duration had no effect on hydroxycinnamate and flavonol extractions. Greater amounts of gallic acid, (+)-catechin, (−)-epicatechin, and total tannins were extracted with increasing CS duration, with differences maintained during bottle aging. Anthocyanin extraction and...
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    Biofilm production by Zymomonas mobilis enhances ethanol production and tolerance to toxic inhibitors from rice bran hydrolysate 

    Tatsaporn Todhanakasem; Atit Sangsutthiseree; Kamonchanok Areerat; Young, Glenn M.; Pornthap Thanonkeo (2014-09)

    Microorganisms play a significant role in bioethanol production from lignocellulosic material. A challenging problem in bioconversion of rice bran is the presence of toxic inhibitors in lignocellulosic acid hydrolysate. Various strains of Zymomonas mobilis (ZM4, TISTR 405, 548, 550 and 551) grown under biofilm or planktonic modes were used in this study to examine their potential for bioconversion of rice bran hydrolysate and ethanol production efficiencies. Z. mobilis readily formed bacterial attachment on plastic surfaces, but not on gla...
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    Fermentation of rice bran hydrolysate to ethanol using Zymomonas mobilis biofilm immobilization on DEAE-cellulose 

    Tatsaporn Todhanakasem; Tipong Narkmit; Kamonchanok Areerat; Pornthap Thanonkeo (2015)

    Background: The major challenges associated with the fermentation of lignocellulosic hydrolysates are the reduction in the operating cost and minimizing the complexity of the process. Zymomonas mobilis biofilm has been emerged to resolve these complexities. Biofilm has been reported to tolerate to the toxic inhibitors and easily manipulated toward the cell recycle through the cell immobilization. Results: Z.mobilisZM4 and TISTR 551were able to develop biofilms onDEAE cellulose under the differences in the morphologies. Z. mobilis ZM4 devel...
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    Freeze–thaw stability of edible oil-in-water emulsions stabilized by sucrose esters and Tweens 

    Suwimon Ariyaprakai; Kanitha Tananuwong (2015)

    This work aimed to investigate freeze thaw stability of 20 wt% coconut oil (CtO) and corn oil (CnO)- in-water emulsions stabilized by 1 wt% of various types of sucrose esters and Tweens. Sucrose esters composed mainly of sucrose monostearate (S1670), sucrose monopalmitate (P1670), sucrose monolaurate (L1695), Tween 20 (TW20), Tween 60 (TW60), and Tween 80 (TW80) were used. After all emulsions were frozen at 20 ± 2 C and thawed to room temperature, their stability was analyzed from visual appearance, optical micrographs, amounts of desta...
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    Development of curcumin loaded-magnetic iron oxide nanoparticles 

    Tripathi, S.; Loadheerasiri, S. (2016)
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    Sensory characterization of instant tom yum soup 

    Kamolnate Kitsawad; Nasara Tuntisripreecha (2016)

    Kamolnate Kitsawad 5.86Assumption University of Thailand Nasara Tuntisripreecha Abstract Instant tom yum soups are widely available in the market in various forms, powder, paste, and liquid. Despite the similarity in the use of key ingredients, each product is unique in flavor. The aim of this study was to characterize the sensory profile of instant tom yum soup. Descriptive analysis was performed to examine the sensory profiles of 12 instant tom yum soups. Sensory descriptors were generated; appearance (color, amount of oil, cloudiness), a...
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    Zymomonas mobilis biofilm formation on different types of carriers 

    Tatsaporn Todhanakasem; Rashmi Tiwari (2016-06)

    Zymomonas mobilis biofilm have been proposed to enhance the bioethanol production from agricultural derived materials. Z. mobilis biofilm reactor has been prospected to be used for a large scale bioethanol production. The cost effective carrier for Z. mobilis biofilm reactor was searched. This study investigated the biofilm forming abilities of Z. mobilisstrain TISTR 551 and ZM4 on biotic (loofah and corn silk) or abiotic carriers (flatted sheet polyvinyl chloride, PVC). Biofilm formation was visualized for 3 consecutive days under the bright-f...
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    Encapsulation of protease from Aspergillus oryzae and lipase from Thermomycess lanuginoseus using alginate and different copolymer type 

    Thu, Truong Thi Mong; Wunwisa Krasaekoopt (2016-07)

    Although the application of enzymes in food as a food processing aid and enzyme supplement is ofinterest and widely used, the enzymes can be easily deactivated or lose their activity due to many causessuch as pH and moisture as well as through the introduction of incompatible ingredients during foodprocessing and storage. These problems can be solved by the encapsulation technique, especially in a gelmatrix. The influences were studied of the alginate concentration, types of copolymer and their con-centrations on the bead size, encapsulation yie...
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    Development of corn silk as a biocarrier for Zymomonas mobilis biofilms in ethanol production from rice straw 

    Tatsaporn Todhanakasem; Rashmi Tiwari; Pornthap Thanonkeo (2016-04)

    Z. mobilis cell immobilization has been proposed as an effective means of improving ethanol production. In this work, polystyrene and corn silk were used as biofilm developmental matrices for Z. mobilis ethanol production with rice straw hydrolysate as a substrate. Rice straw was hydrolyzed by dilute sulfuric acid (H2SO4) and enzymatic hydrolysis. The final hydrolysate contained furfural (271.95 ± 76.30 ppm), 5-hydroxymethyl furfural (0.07 ± 0.00 ppm), vanillin (1.81 ± 0.00 ppm), syringaldehyde (5.07 ± 0.83 ppm), 4- hydroxybenzaldehy...
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    Properties and applications of different probiotic delivery systems 

    Wunwisa Krasaekoopt (2012)

    Probiotic products should contain and maintain viable cells during the product shelf life at least above therapeutic minimum level for the benefit of consumers. Due to their generally poor viability and stability in food products, especially in fermented dairy products, as well as in the host gastrointestinal tract, various microencapsulation techniques for probiotics have been developed in recent years to overcome these issues. This chapter describes the benefit of microencapsulation, various encapsulation techniques used to encapsulate probio...
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    Microbial Biofilm in the industry 

    Tatsaporn Todhanakasem (2013)

    Biofilms represent negative and positive attributes in the industries. Biofilm is a functional consortium of microorganisms attached to either biotic or abiotic surfaces and embedded under the extracellular polymeric substances (EPS). Spoilage and pathogenic microorganisms can develop biofilms on food industrial surfaces that can lead to food spoilage and disease transmission when the inappropriate clean up and control have been applied in the food industies. However, single and mixed species of microbial biofilms also represent tremendous adv...
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    Microencapsulation of Probiotics in Hydrocolloid Gel Matrices: A Review 

    Wunwisa Krasaekoopt (2013)

    The use of hydrocolloid gel matrices to encapsulate probiotics is of interest due to their gentle and simplicity of gel formation as well as mild condition used. This technique enhances the viability of entrapped cells during the product shelf life at least above therapeutic minimum level as well as in the gastrointestinal tract to ensure the health benefits of consumers. This review describes the advantages of microencapsulation, hydrocolloid gel matrices such as alginate, carrageenan and whey protein, microencapsulation processes, special...
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    Interfacial and emulsifying properties of sucrose ester in coconut milk emulsions in comparison with Tween 

    Suwimon Ariyaprakai; Tanachote Limpachoti; Pasawadee Pradipasena (2013)

    In this study, sucrose esters were presented as a promising alternative to petrochemically synthesized Tweens for application in coconut milk emulsions. The interfacial and emulsifier properties of sucrose ester (SE), mainly sucrose monostearate, had been investigated in comparison with Tween 60 (TW), an ethoxylate surfactant. The interfacial tension measurement showed that SE had a slightly better ability to lower the interfacial tension at coconut oilewater interface. These surfactants (0.25 wt%) were applied in coconut milk emulsions wit...
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    Stability of Orange Oil-in-Water Emulsions Prepared by Multilayer Membranes 

    Suwimon Ariyaprakai; Qi, Wu Jai (2013)

    Due to the small molecular size of orange oil, primary orange oil–in-water emulsion can easily undergo Ostwald ripening destabilization. To improve the stability of orange oil emulsion, multilayer emul- sion was prepared using Citrem as emulsifier and gelatin as coated biopolymer. Firstly, primary emulsion containing 20 wt% orange oil and 0.4 wt% Citrem was produced. Since Citrem was an anionic emulsifier, the primary emulsion had a negative charge of ~ -57mV. Then, the primary emulsion was suspended in 0.5 wt% gelatin aqueous solution...
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    Use of Rice Hull Hydrolyzate in the Cultivation of Lactobacillus acidophilus 

    Tatsaporn T.; Nikapong Puanglamyai (2012)

    This project aims to minimize the cost of production of live L. acidophilus by replacing the expensive carbon source in the fermentation medium with the rice hull hydrolyzate and compare the growth efficiency of the microbe in the rice hull formulated medium with the rich medium (de Man Rogosa Sharpe or MRS). Rice hull was hydrolyzed with diluted H2 SO4 and HCl at various concentrations 0.25, 0.5 and 1% v/v at 120 o C for 30 minutes. The hydrolyzate was further overliming with Ca(OH) 2 and filter through the diatomaceous earth....
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