T/GVEAIA 031.1-2026 Rare Earth Intervention in Agricultural Product Production Regulation Part 1: Terms and Classification

Scope

This document defines the terminology and definitions of rare earth elements in the field of agricultural production regulation, and establishes the classification principles and methods. This document is applicable to the planning, design, implementation, and evaluation of the technical system of rare earth elements intervening in agricultural production regulation, covering the regulation of flavor quality, enrichment of functional components, and safe production of economic crops, vegetables, fruits, medicinal plants, and special grain crops. This document serves as a general foundation for the T/GVEAIA 031 series of standards and provides terminology and classification basis for the T/GVEAIA 038 specific category standards. 4. Classification 4.1 Classification by rare earth element type According to the dual-mode effect and ionic radius, they are divided into: a) Large-radius rare earths (LRE): lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), with an ionic radius >1.05 nm, suitable for sweetness and sourness regulation; b) Medium-radius rare earths (MRE): samarium (Sm), europium (Eu), gadolinium (Gd), with an ionic radius of 0.96-1.05 nm, suitable for umami and compound flavor regulation; c) Small-radius rare earths (SRE): yttrium (Y), dysprosium (Dy), holmium (Ho), erbium (Er), with an ionic radius <0.96 nm, suitable for bitterness and spiciness regulation; d) Mixed rare earths (MIX-RE): two or more rare earths are combined in a specific ratio (e.g., Ce:La=1:0.8) to produce synergistic effects. 4.2 Classification by flavor regulation type According to the metabolic pathway of target flavor substances, they are divided into: a) Sweetness regulation (Gan): aimed at increasing soluble sugars (sucrose, fructose, glucose) or sweet amino acids (glycine, alanine); b) Acidity regulation (Suan): aimed at increasing organic acids (citric acid, malic acid, tartaric acid) or reducing the sugar-acid ratio; c) Bitterness regulation

Development Information

Same series standard

Related Standards