Article
Food Science & Technology
An Li, Jie Zhao, Jialin Xi, Xusheng Yang, Xinxin Jin, Qiusheng Chen, Ligang Pan
Summary: The study used stable isotope data and multielement analysis to effectively distinguish peach samples from different regions and reveal variations in geographical origins. Principal component analysis and discriminant analysis showed that H and O isotope ratios are key factors in discriminating the geographical origins of peaches.
Article
Food Science & Technology
Hui Zhang, Jiyun Nie, Zhaoguo Tong, Jing Li, An Li, Youming Shen, Jia Zhang, Lixue Kuang
Summary: This study aimed to explore the regional characteristics of soluble sugars, organic acids, and stable isotopes in Fuji apple and their potential in tracing the geographical origin. The results showed that certain parameters such as sorbitol, glucose, fructose, sucrose, delta H-2, and delta C-13 could be used to distinguish apple samples from different regions. However, organic acids were not suitable for discrimination, and soluble sugars and stable isotopes were not effective in distinguishing samples from some regions.
JOURNAL OF FOOD QUALITY
(2022)
Article
Chemistry, Applied
Xiaohan Liu, Jian Mu, Dan Tan, Kemin Mao, Jinjie Zhang, Faizan Ahmed Sadiq, Yaxin Sang, Ang Zhang
Summary: Food traceability is crucial for ensuring food safety and quality. This study investigated the origin of concentrated apple juice (CAJ) in China using isotopic and elemental analysis techniques. The results revealed significant differences in the isotopic and elemental compositions among different production areas. Ten key variables were identified for differentiating the samples. These findings provide valuable insights into understanding the geographic variations of Chinese CAJ and controlling fraudulent labeling related to its origin.
Article
Chemistry, Applied
Cidan Zhaxi, Shanshan Zhao, Tangwei Zhang, Hao Dong, Haijin Liu, Yan Zhao
Summary: The study successfully distinguished Tibetan chickens from those in plain areas using stable isotopes and chemometric methods, achieving a cross-validation rate of 97.6%. Additionally, the research revealed a strong correlation between the isotopic values of chicken samples and environmental parameters, providing important insights for tracing the origins of chickens.
Article
Food Science & Technology
Jian Zhang, Yiqian Ma, Feilong Shao, Yuanyu Lu, Libo Zhu, Xiansong Xu
Summary: By combining the determination of multielement content and stable isotope ratios with chemometric analysis, it is possible to distinguish tequila of different geographical origins in Mexico.
JOURNAL OF FOOD QUALITY
(2021)
Article
Chemistry, Applied
Roisin O. ' Sullivan, Raquel Cama-Moncunill, Michael Salter-Townshend, Olaf Schmidt, Frank J. Monahan
Summary: Scientifically supporting geographic origin claims on food labels enhances consumer trust. Stable isotope ratio analysis (SIRA) verifies the origin of food products by examining naturally occurring differences in isotopic compositions. This study conducted SIRA on casein from butter, cheese, and milk powder, and successfully predicted the region of origin using machine learning models based on isotopic values.
Article
Chemistry, Applied
Xinyu Ni, Xuyan Li, Guojing Ran, Jiali Chen, Xinwei Jiang, Jianxia Sun, Weibin Bai
Summary: This study successfully differentiated the geographical origins of two pomfrets in China through multielement composition and stable isotope ratio analysis, with high accuracy.
Article
Environmental Sciences
Peng Wang, Weijian Zhou, Xiaohu Xiong, Shugang Wu, Zhenchuan Niu, Peng Cheng, Hua Du, Yaoyao Hou
Summary: The article presents a comprehensive analysis of the stable carbon isotopic composition of fossil fuels in China, highlighting the enriched delta C-13 signatures in coal, intermediate variations in oil, and the depletion in natural gas. It suggests that geographic origin is a crucial factor to consider when estimating CO2 sources using delta C-13, and recommends measuring local end members' signatures when detailed geographical origin information is lacking. This work contributes to improving the quantification of CO2 sources from fossil fuel emissions in China and the global carbon isotope database.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
Yuntao Wu, Xiaodong Zhang, Zhaoliang Song, Changxun Yu, Man Liu, Yidong Wang, Qian Hao, Qiang Li, Xiangwei Zhao, Lele Wu, Xia Wang
Summary: This study investigates the spatial patterns and driving factors of carbon and nitrogen isotopes in plant-soil systems of grasslands in northern China. The results provide important references for future research on biogeochemical cycles in temperate grasslands.
Article
Engineering, Marine
Qibin Lao, Guoqiang Liu, Jingsong Gao, Youli Shen, Qizhong Su, Chunqing Chen, Fajin Chen
Summary: Isotope measurements in the northeastern Beibu Gulf of China revealed that nitrate sources primarily originated from local pollution sources, with seasonal variations and significant impacts from human activities on the marine ecosystem, resulting in excessive nutrient levels.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Review
Food Science & Technology
Shanshan Zhao, Haijin Liu, Mengjie Qie, Jiukai Zhang, Liqin Tan, Yan Zhao
Summary: Stable isotope abundance, as a natural fingerprint of food growing environment, has attracted great attention in tracing and adulterating analysis of animal products. In recent years, the combination of stable isotope ratio analysis and other methods has become a promising approach for ensuring the authenticity and traceability of animal products.
FOOD REVIEWS INTERNATIONAL
(2023)
Article
Food Science & Technology
Chengying Hai, Xiaolong Yang, Haiyan Fu, Hengye Chen, Song He, Liping Kang, Qingxiu Hao, Li Zhou, Zhilai Zhan, Zhi Liu, Jian Yang, Lanping Guo
Summary: A method based on stable isotopes and multiple elements was developed to accurately identify the geographical origin of Atractylodes macrocephala Koidz (AMK). This method has significant implications for ensuring product quality and fair trade.
JOURNAL OF FOOD SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Yunyan Ni, Dazhong Dong, Limiao Yao, Jianping Chen, Xing Liang, Fei Liu, Jian Li, Jinhao Guo, Jinliang Gao
Summary: This study analyzed gases from shale gas fields in the southern Sichuan Basin to investigate their geochemical characteristics and origins. The gases belonged to shale gas from the Upper Ordovician-Lower Silurian shale and were dominated by methane. The isotopic compositions of carbon indicated high thermal maturity and contributions from organic matter. The study found a complete carbon isotopic reversal trend and highlighted the importance of understanding the geochemical characteristics of shale gases for future exploration.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Food Science & Technology
Yun Xia, Lijuan Jia, Kai Zhang, Jun Xie, Ermeng Yu, Jingjing Tian, Wangbao Gong, Zhifei Li, Hongyan Li, Guangjun Wang, Yarong Liu
Summary: This study explores the use of mineral elements and stable isotopes to trace the origin of Procambarus clarkii and establishes an origin tracing system. The results show that the combination of stable isotopes and mineral elements can effectively distinguish samples from different regions.
Article
Chemistry, Analytical
Lucie Sauzeat, Marta Costas-Rodriguez, Emmanuelle Albalat, Nadine Mattielli, Frank Vanhaecke, Vincent Balter
Summary: The study determined the stable isotopic compositions of iron, copper, and zinc of six reference materials of biological origin, showing good agreement with certified values. By comparing 39 possible pair-wise isotopic values, 11 significantly different pairs were identified. The differences identified were mostly within the same order of magnitude as the estimated mean uncertainties.
