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Park Soo-Yun Lee So Young Yang Jung Wook Lee Joon-Seol Oh Sung-Dug Oh Seonwoo Lee Si Myung Lim Myung-Ho Park Soon Ki Jang Jae-Seon Cho Hyun Suk Yeo Yunsoo 《Food science and biotechnology》2016,25(1):283-291
Food Science and Biotechnology - We determined the phytochemical diversity, including carotenoids, flavonoids, anthocyanins, and phenolic acids, in sweet potatoes (Ipomoea batatas L.) with... 相似文献
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Soo-Yun Park Sun-Hwa Ha Sun-Hyung Lim Ji Yun Jung Si Myung Lee Yunsoo Yeo Jae Kwang Kim 《Food science and biotechnology》2012,21(4):1141-1148
Total soluble phenolic acids (free and esterified forms) from 15 Korean rice cultivars (Oryza sativa L.) were characterized to determine the total soluble phenolic acid contents and the diversity among the phenolic acids. The individual phenolic acids were identified by GC coupled to time-of-flight MS (TOFMS) including tertbutyldimethylsilyl (TBDMS) derivatization. This method requires only 13 min for the GC-TOFMS run. Total soluble phenolic acid contents were higher in pigmented rice (168–368 μg/g) than nonpigmented rice (146–172 μg/g). Freeform phenolic acids accounted for less than 10% of the total soluble phenolic acids. The dominant compounds were ferulic and sinapic acid, which were detected as cisand trans-isomers. The content of salicylic acid in rice grain varied, ranging from 7.95 to 29.61 μg/g. The quantitative results of this study indicate that the black rice ‘Josengheugchalbyeo’ could facilitate development of phenolic-rich rice or food. 相似文献
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Lee Wonhui Yeo Yunsoo Oh Seonwoo Cho Kwang-Soo Park Young-Eun Park Soon Ki Lee Si Myung Cho Hyun Suk Park Soo-Yun 《Food science and biotechnology》2017,26(5):1379-1389
Food Science and Biotechnology - Lipophilic bioactive compounds and hydrophilic primary metabolites from potato (solanum tubersum L.) tubers with different-colored flesh (white-, yellow-, red-, and... 相似文献
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Kensuke?NakaEmail author Hideaki?Itoh Soo-Yun?Park Yoshiki?Chujo 《Polymer Bulletin》2004,52(2):171-176
Summary
Gold nanoparticles modified with poly(2–methyl–2–oxazoline) have been prepared via
chemical reduction of HAuCl4 by NaBH4. The gold nanoparticles were
homogeneously dispersed in poly(vinyl chloride) as a polymer matrix by the
miscibility between the protecting polymer of the nanoparticle and the polymer
matrix. Differential scanning calorimetry and UV–vis absorption measurement clearly
showed that the miscibility played an important role for incorporation of the metal
nanoparticles in the polymer matrix. 相似文献
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Soo-In Sohn Subramani Pandian John-Lewis Zinia Zaukuu Young-Ju Oh Soo-Yun Park Chae-Sun Na Eun-Kyoung Shin Hyeon-Jung Kang Tae-Hun Ryu Woo-Suk Cho Youn-Sung Cho 《International journal of molecular sciences》2022,23(1)
In recent years, the rapid development of genetically modified (GM) technology has raised concerns about the safety of GM crops and foods for human health and the ecological environment. Gene flow from GM crops to other crops, especially in the Brassicaceae family, might pose a threat to the environment due to their weediness. Hence, finding reliable, quick, and low-cost methods to detect and monitor the presence of GM crops and crop products is important. In this study, we used visible near-infrared (Vis-NIR) spectroscopy for the effective discrimination of GM and non-GM Brassica napus, B. rapa, and F1 hybrids (B. rapa X GM B. napus). Initially, Vis-NIR spectra were collected from the plants, and the spectra were preprocessed. A combination of different preprocessing methods (four methods) and various modeling approaches (eight methods) was used for effective discrimination. Among the different combinations, the Savitzky-Golay and Support Vector Machine combination was found to be an optimal model in the discrimination of GM, non-GM, and hybrid plants with the highest accuracy rate (100%). The use of a Convolutional Neural Network with Normalization resulted in 98.9%. The same higher accuracy was found in the use of Gradient Boosted Trees and Fast Large Margin approaches. Later, phenolic acid concentration among the different plants was assessed using GC-MS analysis. Partial least squares regression analysis of Vis-NIR spectra and biochemical characteristics showed significant correlations in their respective changes. The results showed that handheld Vis-NIR spectroscopy combined with chemometric analyses could be used for the effective discrimination of GM and non-GM B. napus, B. rapa, and F1 hybrids. Biochemical composition analysis can also be combined with the Vis-NIR spectra for efficient discrimination. 相似文献
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