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Identification of Fuping goat milk by multi-element analysis combined with chemometrics
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Jia-Lin ZHANG1, 2, Qiao-Ying CHANG1, 2, Yong-Xiang ZHU1, Zi-Juan ZHANG1, 2, *
Journal of Food Safety & Quality | 2025, 16(12) : 40 - 49
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Journal of Food Safety & Quality | 2025, 16(12): 40-49
Highlight: “The 14th Five-Year Plan” National Key Research and Development Program of China—Key Technology Research and Standardized Application for Panoramic Analysis of Food Authenticity
Identification of Fuping goat milk by multi-element analysis combined with chemometrics
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Jia-Lin ZHANG1, 2, Qiao-Ying CHANG1, 2, Yong-Xiang ZHU1, Zi-Juan ZHANG1, 2, *
Affiliations
  • 1 Agro-product Safety Research Center, Chinese Academy of Quality and Inspection & Testing, Beijing 100176, China
  • 2 Key Laboratory of Food Authenticity Identification, State Administration for Market Regulation, Beijing 100176, China
Published: 2025-06-25 doi: 10.19812/j.cnki.jfsq11-5956/ts.20241231001
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Objective To achieve the geographical discrimination of Fuping goat milk using microwave digestion combined with inductively coupled plasma mass spectrometry (ICP-MS) and chemometric methods. Methods A total of 70 goat milk samples were collected from 7 regions in Shaanxi Province, including Baoji, Hanzhong, Jingyang County and Qian County (both in Xianyang), Weinan, Xi’an and Yan’an. They were lyophilized to milk powder, and after microwave digestion, the digested solution was analyzed using ICP-MS. Principal component analysis (PCA) and orthogonal partial least squares-discrimination analysis (OPLS-DA) were employed to discriminate goat milk from different origins. Results A total of 42 kinds of elements in the milk powder from 7 different origins were detected. The concentrations of K, Ca, Fe, Zn, Si and Na were relatively high, followed by B, Ti, Mg, Al, Cu and Ba, while other elements were found in lower concentrations, particularly the rare earth elements such as Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er, Tm, Yb, Lu, Ho and Y, which were present in negligible amounts. The 7 origins were divided into two groups based on distance: Group I (Baoji; Hanzhong; Weinan; Yan’an) and Group II (Jingyang County, Qian County of Xianyang; Weinan; Xi’an). OPLS-DA model was applied to both groups, with accuracy rates of 95.12% and 87.80%, respectively. Among them, the accuracy of samples from Fuping County-Weinan City was 100%. In Group I, the content differences of Ba, Mn, Si, Zn, Se, Na and B were the primary factors for origin discrimination. While in Group II, Se, B and Ni elements contributed significantly to the origin discrimination. Geographical distance was the most important factor to distinguish goat milk from different origins. While the data of 6 goat milk samples from Fuping County-Weinan City were imported into both Group I and Group II models for validation, the discrimination accuracy was 100% for both groups. Conclusion The established multi-element analysis combined with chemometrics could achieve rapid and accurate identification of Fuping goat milk from small-scale regions (>50 km).

goat milk  /  multiple elements analysis  /  chemometrics  /  orthogonal partial least squares discriminant analysis  /  inductively coupled plasma-mass spectrometry  /  geographical origin identification
Jia-Lin ZHANG, Qiao-Ying CHANG, Yong-Xiang ZHU, Zi-Juan ZHANG. Identification of Fuping goat milk by multi-element analysis combined with chemometrics[J]. Journal of Food Safety & Quality, 2025 , 16 (12) : 40 -49 . DOI: 10.19812/j.cnki.jfsq11-5956/ts.20241231001
Year 2025 volume 16 Issue 12
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doi: 10.19812/j.cnki.jfsq11-5956/ts.20241231001
  • Receive Date:2024-12-31
  • Online Date:2026-01-13
  • Published:2025-06-25
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  • Received:2024-12-31
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    1 Agro-product Safety Research Center, Chinese Academy of Quality and Inspection & Testing, Beijing 100176, China
    2 Key Laboratory of Food Authenticity Identification, State Administration for Market Regulation, Beijing 100176, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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