Discriminative study of a potato (Solanum tuberosum L.) cultivation region by measuring the stable isotope ratios of bio-elements

被引：45

作者：

Chung, Ill-Min ^{[1
]}

Kim, Jae-Kwang ^{[2
]}

Jin, Yong-Ik ^{[3
]}

Oh, Yong-Taek ^{[1
]}

Prabakaran, Mayakrishnan ^{[1
]}

Youn, Kyoung-Jin ^{[1
]}

Kim, Seung-Hyun ^{[1
]}

机构：

[1] Konkuk Univ, Coll Life & Environm Sci, Dept Appl Biosci, Seoul 143701, South Korea

[2] Incheon Natl Univ, Coll Life Sci & Bioengn, Div Life Sci, Inchon 406772, South Korea

[3] RDA, Natl Inst Crop Sci, Highland Agr Res Inst, Pyeongchang 232955, South Korea

来源：

FOOD CHEMISTRY | 2016年 / 212卷

关键词：

Potato tuber; Cultivation origin; Stable isotope; Bio-element; Chemometrics; ORYZA-SATIVA L; GEOGRAPHICAL ORIGIN; MULTIVARIATE-ANALYSIS; MASS-SPECTROMETRY; MULTIELEMENT; RICE; FOOD; SPECTROSCOPY; GRAINS;

D O I：

10.1016/j.foodchem.2016.05.161

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

Compared to other foods, the use of common bio-elements to identify the geographical origin of potato remains limited. Thus, this study aimed to verify whether the cultivation regions of raw potato tubers could be determined by the stable isotope composition analysis of bio-elements. delta C-13(VPDB) and delta N-15(AIR) in potato were influenced by region and cultivar, whereas delta O-18(VSMOW) and delta S-34(VCDT) were only influenced by region (p < 0.0001). A two-dimensional plot of delta O-18(VSMOW) and delta S-34(VCDT) effectively distinguished between high and low altitude regions, and also reliably discriminated Wanju, Haenam, and Boseong cultivars in low altitude regions. delta S-34(VCDT) was the main component that was responsible for the separation of samples in the principal component analysis (eigenvector of -0.6209) and orthogonal projection to latent structure-discriminant analysis (VIP value of 1.0566). In conclusion, this study improves our understanding of how the isotope composition of potato tubers varies with respect to cultivation regions and cultivars. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：48 / 57

页数：10

共 39 条

[1]

Determining the geographic origin of potatoes with trace metal analysis using statistical and neural network classifiers [J].