Quality divergence of Yunnan upland rice versus Jiangxi and Heilongjiang paddy rice revealed by physicochemical, sensory, volatile and metabolomic profiling.

Ying Xiao, Zhenxing Wang, Nandong Yue, Yunfei Tuo, Jiancheng Wen, Liwei Guo, Chunfang Zhao, Xiahong He, Jinggui Nie

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Article in Food chemistry: X, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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9 authors.

Ying XiaoYunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming 650224, China.

Zhenxing WangYunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming 650224, China.

Nandong YueYunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming 650224, China.

Yunfei TuoCollege of Soil and Water Conservation, Southwest Forestry University, Kunming, 650224, China.

Jiancheng WenRice Research Institute, Yunnan Agricultural University, Kunming 650201, China.

Liwei GuoRice Research Institute, Yunnan Agricultural University, Kunming 650201, China.

Chunfang ZhaoInstitute of food crops, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.

Xiahong HeYunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming 650224, China.

Jinggui NieYunnan Provincial Key Laboratory for Conservation and Utilization of In-forest Resource, Southwest Forestry University, Kunming 650224, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to evaluate quality differences between Yunnan upland rice (YNUR) collected in Honghe, Pu'er, Nujiang and Qujing and paddy rice from Jiangxi and Heilongjiang by physicochemical indexes, taste analyzer, sensory evaluation, e-nose, and untargeted metabolomics. Compared with paddy rice, YNUR exhibited significantly higher amylose content (11.78-14.11%), lower expected glycemic index (60.55-69.13), and higher taste value (8.75-9.01), along with a higher retrogradation value and lower breakdown value. Its texture was characterized by high hardness, high elasticity and low viscosity. Furthermore, YNUR had higher aldehyde and ketone contents, presenting an aroma profile dominated by fruity and faint pungent notes. (Z)-2-nonenal, nonanal and 2-ethyl-3,5-dimethylpyrazine were the key differential odor compounds. Metabolomic analysis identified 573 differential metabolites and revealed significant enrichment of glycerophospholipid and amino acid metabolic pathways in YNUR. This study characterizes the quality attributes of upland rice and provides insights for the cultivation and application of water-saving rice.

Indexed as

Key odorantsMetabolic pathwaysMetabolomic profilesPlateau upland riceQuality difference

Identifiers

PMID42866489

DOI10.1016/j.fochx.2026.104539

PMCPMC13656600

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.