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Wang F, Bi J, Lyu M, Lyu J. Insight into the effect of osmosis agents on macro- and micro- texture, water distribution, and thermal stability of instant controlled pressure drop drying peach chips. Food Chem 2024; 440:138236. [PMID: 38142552 DOI: 10.1016/j.foodchem.2023.138236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 11/30/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
To investigate the influence of sugar structure on the quality of peach chips produced using osmotic dehydration (OD) in combination with instant controlled pressure drop (DIC) drying, erythritol, glucose, maltose, and trehalose were selected as osmotic agents. The properties of the osmotic solutions, as well as the macro- and micro-texture, water distribution, and thermal stability of peach chips were investigated. Results showed that OD pretreatments inhibited the formation of large cavity structures. The highest hardness (101.34 N) and the lowest hydrophobicity (0°) were obtained in erythritol-OD samples. Trehalose-OD samples with the most homogeneous pore structure exhibited the highest crispness (1.05 mm) and the highest glass transition temperature (52.06 °C). Various absorption peaks of peach chips pretreated with different OD methods, characterized by Raman spectroscopy, suggested changes in composition and functional groups due to the diffusion of sugars into the cells of peach tissues, which also contributed to the higher Tg.
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Affiliation(s)
- Fengzhao Wang
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China; Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Jinfeng Bi
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China; Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Mingyue Lyu
- College of Food Science, Shenyang Agricultural University, Shenyang 110866, China; Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Jian Lyu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences (CAAS), Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
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Jeong K, Kim H, Min S, Yoon YW, Cho Y, Park CH, Ryu TI, Hwang SR, Namgoong SK. DFT-Spectroscopy Integrated Identification Method on Unknown Terrorist Chemical Mixtures by Incorporating Experimental and Theoretical GC-MS, NMR, IR, and DFT-NMR/IR Data. Anal Chem 2024; 96:694-700. [PMID: 38153912 DOI: 10.1021/acs.analchem.3c03647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
In the event of a chemical attack, the rapid identification of unknown chemical agents is critical for an effective emergency response and treatment of victims. However, identifying unknown compounds is difficult, particularly when relying on traditional methods such as gas and liquid chromatography-mass spectrometry (GC-MS, LC-MS). In this study, we developed a density functional theory and spectroscopy integrated identification method (D-SIIM) for the possible detection of unknown or unidentified terrorist materials, specifically chemical warfare agents (CWAs). The D-SIIM uses a combination of GC-MS, nuclear magnetic resonance (NMR) spectroscopy, infrared (IR) spectroscopy, and quantum chemical calculation-based NMR/IR predictions to identify potential CWA candidates based on their chemical signatures. Using D-SIIM, we successfully verified the presence of blister and nerve agent simulants in samples by excluding other compounds (ethyl propyl sulfide and methylphosphonic acid), which were predicted to be candidates with high probability by GC-MS. The findings of this study demonstrate that the D-SIIM can detect substances that are likely present in CWA mixtures and can be used to identify unknown terrorist chemicals.
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Affiliation(s)
- Keunhong Jeong
- Department of Physics and Chemistry, Korea Military Academy, Seoul 01805, South Korea
| | - Honghyun Kim
- Department of Civil Engineering and Environmental Sciences, Korea Military Academy, Seoul 01805, South Korea
| | - Sein Min
- Department of Chemistry, Seoul Women's University, Seoul 01797, South Korea
| | - Young Wook Yoon
- Department of Chemistry, Seoul Women's University, Seoul 01797, South Korea
| | - Yoonjae Cho
- Accident Coordination and Training Division, National Institute of Chemical Safety, 90 Gajeongbuk-ro, Yuseong-gu, Daejeon 34114, South Korea
| | - Choon Hwa Park
- Accident Coordination and Training Division, National Institute of Chemical Safety, 90 Gajeongbuk-ro, Yuseong-gu, Daejeon 34114, South Korea
| | - Tae In Ryu
- Accident Coordination and Training Division, National Institute of Chemical Safety, 90 Gajeongbuk-ro, Yuseong-gu, Daejeon 34114, South Korea
| | - Seung-Ryul Hwang
- Accident Coordination and Training Division, National Institute of Chemical Safety, 90 Gajeongbuk-ro, Yuseong-gu, Daejeon 34114, South Korea
| | - Sung Keon Namgoong
- Department of Chemistry, Seoul Women's University, Seoul 01797, South Korea
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McLennan L, Brown‐Nash A, Busby T, Canaria J, Kominia A, Smith JL, Oxley JC, Dubnikov F, Kosloff R, Zeiri Y. Characterization of the Hexanitrate Esters of Sugar Alcohols. PROPELLANTS EXPLOSIVES PYROTECHNICS 2021. [DOI: 10.1002/prep.202000197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lindsay McLennan
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
| | - Audreyana Brown‐Nash
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
| | - Taylor Busby
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
| | - Jeffrey Canaria
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
| | - Athina Kominia
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
| | - James L. Smith
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
| | - Jimmie C. Oxley
- Chemistry Department University of Rhode Island 140 Flagg Road Kingston RI 02881
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