Taiwan Sugar Corporation

Tainan, Taiwan

Taiwan Sugar Corporation

Tainan, Taiwan

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Huang G.-L.,National Chiayi University | Huang G.-L.,Taiwan Sugar Corporation | Wang B.-J.,National Chiayi University | Weng Y.-M.,National Chiayi University
Journal of Food Processing and Preservation | Year: 2014

Toona sinensisRoem (also known as Chinese toon) is widely distributed in Southeast Asia. The effects of different drying methods (including freeze drying, 65C hot air drying and solar drying) on the antioxidant activities of the toon leaves were investigated. Water and methanol extracts of leaves dried with all three methods exerted up to 94% 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and showed better reducing powder than butylated hydroxyanisole and α-tocopherol at the level of 0.8mg/mL. While methyl gallate was only detected in methanol extracts (99-395μg/g), the highest amount of gallic acid was found in water extracts (3.21-4.58mg/g) for its higher polarity. The addition of dried toon leaves reduced the lipid oxidation as represented by thiobarbituric acid reactive substances (TBARS) content in toon barbecue sauce; the TBARS values after 4 months of storage for freeze-dried, hot air-dried, solar-dried and control samples were 1.13±0.16, 1.42±0.06, 1.58±0.09 and 2.14±0.09ppm, respectively. © 2012 Wiley Periodicals, Inc.


Chen W.-H.,National University of Tainan | Tu Y.-J.,National University of Tainan | Sheen H.-K.,Taiwan Sugar Corporation
Applied Energy | Year: 2011

Disruption of lignocellulosic structure of biomass plays a key role in producing bioethanol from lignocelluloses. This study investigated the impact of dilute sulfuric acid pretreatment on bagasse structure using microwave heating. Three reaction temperatures of 130, 160 and 190 °C with two heating times of 5 and 10. min were considered and a number of instruments were employed to analyze the properties of the bagasse particles. On account of microwave irradiation into the solution with dielectric heating, the experiments indicated that an increase in reaction temperature destroyed the lignocellulosic structure of bagasse in a significant way. The pretreated bagasse particles were simultaneously characterized by fragmentation and swelling. When the reaction temperature was as high as 190 °C, the fragmentation of particles became fairly pronounced so that the specific surface area of the pretreated material grew substantially. Meanwhile, almost all hemicellulose was removed from bagasse and the crystalline structure of cellulose disappeared. In contrast, the feature of lignin was remained clearly. However, a comparison between the heating times of 5 and 10. min revealed that the influence of the heating time on the lignocellulosic structure was not significant, indicating that the pretreatment with 5. min was sufficiently long. © 2011 Elsevier Ltd.


Bach Q.-V.,National Cheng Kung University | Chen W.-H.,National Cheng Kung University | Lin S.-C.,National Cheng Kung University | Sheen H.-K.,Taiwan Sugar Corporation | Chang J.-S.,National Cheng Kung University
Energy Conversion and Management | Year: 2016

Microalgae are a prime source of third generation biofuels. Many thermochemical processes can be applied to convert them into fuels and other valuable products. However, some types of microalgae are characterized by very high moisture and ash contents, thereby causing several problems in further conversion processes. This study presents wet torrefaction (WT) as a promising pretreatment method to overcome the aforementioned drawbacks coupled with microalgal biomass. For this purpose, a microwave-assisted heating system was used for WT of microalga . Chlorella vulgaris ESP-31 at different reaction temperatures (160, 170, and 180. °C) and durations (5, 10, and 30. min). The results show several improvements in the fuel properties of the microalga after WT such as increased calorific value and hydrophobicity as well as reduced ash content. A correlation in terms of elemental analysis can be adopted to predict the higher heating value of the torrefied microalga. The structure analysis by Fourier transform infrared (FT-IR) spectroscopy reveals that the carbohydrate content in the torrefied microalgae is lowered, whereas their protein and lipid contents are increased if the WT extent is not severe. However, the protein and lipid contents are reduced significantly at more severe WT conditions. The thermogravimetric analysis shows that the torrefied microalgae have lower ignition temperatures but higher burnout temperatures than the raw microalga, revealing significant impact of WT on the combustion reactivity of the microalga. Overall, the calorific value of the microalga can be intensified up to 21%, and at least 61.5% of energy in the biomass is retained after WT. © 2016 Elsevier Ltd.


Chen W.-H.,National University of Tainan | Tu Y.-J.,National University of Tainan | Sheen H.-K.,Taiwan Sugar Corporation
International Journal of Energy Research | Year: 2010

Dilute acid pretreatment is a commonly used pretreatment method in the course of producing bioethanol from lignocellulosics and the structure variation of the lignocellulosics is highly related to the pretreatment process. To understand the impact of dilute acid pretreatment on the structure of bagasse, four different pretreatment conditions by varying heating time are considered where the bagasse and the pretreated materials are examined using a variety of analysis methods. The obtained results indicate that the thermogravimetric analysis (TGA) is able to provide a useful insight into the recognition of lignocellulosic structure. Specifically, the peak of the TGA of the pretreated materials moves toward the low temperature region, revealing that the lignocellulosic structure is loosened. However, the characteristic of crystal structure of cellulose remains in the pretreated materials. Increasing heating time enhances the pretreatment procedure; as a result, the average particle size of the investigated materials increases with heating time. This swelling behavior may be attributed to the enlarged holes inside the particles in that the surface area decreases with increasing heating time. In addition, when the heating time is increased to a certain extent (e.g. 15 min), some fragments are found at the surface and they tend to peel off from the surface. It follows that the dilute acid pretreatments have a significant effect on the bagasse structure. Copyright © 2009 John Wiley & Sons, Ltd.


Chen W.-H.,National University of Tainan | Ye S.-C.,National University of Tainan | Sheen H.-K.,Taiwan Sugar Corporation
Bioresource Technology | Year: 2012

Hydrothermal carbonization of sugarcane bagasse using wet torrefaction is studied. The biomass is torrefied in water or dilute sulfuric acid solution and microwaves are employed to heat the solutions where the reaction temperature is fixed at 180. °C. The effects of acid concentration, heating time and solid-to-liquid ratio on the performance of wet torrefaction are investigated. It is found that the addition of sulfuric acid and increasing heating time are conducive to carbonizing bagasse. The calorific value of bagasse can be increased up to 20.3% from wet torrefaction. With the same improvement in calorific value, the temperature of wet torrefaction is lower than that of dry torrefaction around 100. °C, revealing that wet torrefaction is a promising method to upgrade biomass as fuel. The calorific value of torrefied biomass can be predicted well based on proximate, elemental or fiber analysis, and the last one gives the best estimation. © 2012 Elsevier Ltd.


Chen W.-H.,National University of Tainan | Ye S.-C.,National University of Tainan | Sheen H.-K.,Taiwan Sugar Corporation
Applied Energy | Year: 2012

Pretreatment of lignocellulosic biomass is of the utmost importance for the development of bioethanol because of the abundance and low cost of lignocelluloses. To figure out the hydrolysis characteristics of sugarcane bagasse in a microwave irradiation environment, the biomass is pretreated by a dilute sulfuric acid solution at 180 °C for 30. min, with the concentration ranging from 0 to 0.02. M. A variety of analyses, including fiber analysis, TGA, XRD, FTIR and HPLC, are employed to aid in understanding the physical and chemical characteristics of residual solid particles and solutions. A higher concentration is conducive to destroying bagasse; however, the buffering capacity possessed by the biomass is also observed in the pretreatment. The experimental results indicate that around 40-44. wt% of bagasse is degraded from the pretreatment in which around 80-98% of hemicellulose is hydrolyzed. In contrast, crystalline cellulose and lignin are hardly affected by the pretreatment. The maximum yields of xylose and glucose as well as the minimum furfural selectivity occur at the acid concentration of 0.005. M. Consequently, the aforementioned concentration is recommended for bagasse pretreatment and bioethanol production. © 2011 Elsevier Ltd.


Patent
Taiwan Sugar Corporation | Date: 2015-01-22

A Melaleuca quinquenervia extract and its uses are provided. The extract is extracted by a first polar solvent, wherein the first polar solvent is a C3-C6 ethanol. The extract is especially useful for inhibiting the Wnt/-catenin signaling pathway.


Patent
Taiwan Sugar Corporation | Date: 2014-10-06

A method for determining the activity of a nucleic-acid-repair enzyme is provided. The method comprises the following steps: (i) providing a double-stranded nucleic acid molecule, which is labeled with a fluorophore and a quencher and has at least one mutated nucleotide in either strand; (ii) mixing the double-stranded nucleic acid molecule, S1 nuclease, and the sample to obtain a mixture; and measuring the fluorescence intensity of the mixture.


Patent
Taiwan Sugar Corporation | Date: 2016-01-11

A Melaleuca quinquenervia extract and its uses are provided. The extract is extracted by a first polar solvent, wherein the first polar solvent is a C3-C6 ethanol. The extract is especially useful for inhibiting the Wnt/-catenin signaling pathway.


Trademark
Taiwan Sugar Corporation | Date: 2011-08-09

Natural plants and flowers; Wreaths of natural flowers.

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