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Zou Z, Guo B, Guo Y, Ma X, Luo S, Feng L, Pan Z, Deng L, Pan S, Wei J, Su Z. A comprehensive "quality-quantity-activity" approach based on portable near-infrared spectrometer and membership function analysis to systematically evaluate spice quality: Cinnamomum cassia as an example. Food Chem 2024; 439:138142. [PMID: 38081096 DOI: 10.1016/j.foodchem.2023.138142] [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: 09/14/2023] [Revised: 11/22/2023] [Accepted: 12/02/2023] [Indexed: 01/10/2024]
Abstract
Spices have long been popular worldwide. Besides serving as aromatic and flavorful food and cooking ingredients, many spices exhibit notable bioactivity. Quality evaluation methods are essential for ensuring the quality and flavor of spices. However, existing methods typically focus on the content of particular components or certain aspects of bioactivity. For a systematic evaluation of spice quality, we herein propose a comprehensive "quality-quantity-activity" approach based on portable near-infrared spectrometer and membership function analysis. Cinnamomum cassia was used as a representative example to illustrate this approach. Near-infrared spectroscopy and chemometric methods were combined to predict the geographical origin, cinnamaldehyde content, ash content, antioxidant activity, and integrated membership function value. All the optimal prediction models displayed good predictive ability (correlation coefficient of prediction > 0.9, residual predictive deviation > 2.1). The proposed approach can provide a valuable reference for the rapid and comprehensive quality evaluation of spices.
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Affiliation(s)
- Ziwei Zou
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Bingjian Guo
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Yue Guo
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China; Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards, Guangxi Institute of Traditional Medical and Pharmaceutical Sciences, Nanning 530022, China; College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Xiaolong Ma
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Sanshan Luo
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Linlin Feng
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Ziping Pan
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Lijun Deng
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China
| | - Shihan Pan
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China; Guangxi Beibu Gulf Marine Biomedicine Precision Development and High-value Utilization Engineering Research Center, Nanning 530021, China
| | - Jinbin Wei
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China; Guangxi Beibu Gulf Marine Biomedicine Precision Development and High-value Utilization Engineering Research Center, Nanning 530021, China
| | - Zhiheng Su
- Pharmaceutical College, Guangxi Medical University, Nanning 530021, China; Guangxi Key Laboratory of Bioactive Molecules Research and Evaluation, Nanning 530021, China; Guangxi Beibu Gulf Marine Biomedicine Precision Development and High-value Utilization Engineering Research Center, Nanning 530021, China; Guangxi Health Commission Key Laboratory of Basic Research on Antigeriatric Drugs, Nanning 530021, China.
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Wang Y, Hu J, Gong H, Qi C, Zhu N. Factors affecting the durability of dimethyl dithiocarbamate-stabilized air pollution control (APC) residues derived from municipal solid waste incineration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118778. [PMID: 37591105 DOI: 10.1016/j.jenvman.2023.118778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/20/2023] [Accepted: 08/09/2023] [Indexed: 08/19/2023]
Abstract
Sodium dimethyl dithiocarbamate (SDD) is widely used for stabilizing heavy metals to minimize pollution from air pollution control (APC) residues derived from municipal solid waste incineration. However, the effect of environmental conditions on heavy metal leaching from SDD-stabilized APC residues remains unknown. Therefore, this study aimed to evaluate the durability of SDD-stabilized APC residues and determine the relationship between heavy metal leaching and environmental factors, including pH, temperature, and oxygen. The results revealed that accelerated SDD decomposition and the decline in durability of SDD-stabilized APC residues were caused by acidic and aerated conditions and temperatures above 40 °C. A decrease in pH from 12.25 to 4.69 increased the Cd and Pb concentrations in SDD-stabilized APC residue leachate from below detection (0.002 mg/L) to 1.32 mg/L and 0.04 mg/L to 3.79 mg/L, respectively. Heating at 100 °C for 2 d increased the Cd and Pb concentrations from below detection (0.002 mg/L and 0.01 mg/L) to 2.96 mg/L and 0.47 mg/L, respectively. Aeration for 5 d increased the Cd and Pb concentrations from below detection to 0.09 mg/L and 0.49 mg/L, respectively. The decline in durability was attributed to acid hydrolysis, thermal decomposition, and oxidative damage of SDD, resulting in breakage of the chelated sulfur-metal bond, which was confirmed by the decrease in the oxidizable fraction of heavy metals and the SDD content. This study improves the understanding of the factors contributing to the decline in durability of heavy metals in SDD-stabilized APC residues, which is important for ensuring the long-term stabilization and environmental safety of these residues.
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Affiliation(s)
- Yuhui Wang
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jinwen Hu
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Huabo Gong
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Cheng Qi
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Nanwen Zhu
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai, 200240, China.
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