T/GPCPEC 005-2022 Active Group standards

T/GPCPEC 005-2022 Bijie white tea

Publish Date: 2022-04-29 Implement Date: 2022-05-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GPCPEC 005-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Tea

Publish Date: 2022-04-29

Implement Date: 2022-05-30

Scope

Main technical content: 5 Requirements 5.1 Raw Material Requirements The raw material requirements shall comply with Table 1. Table 1: Raw Material Requirements Grade Tenderness Evenness Freshness Purity Superior One bud and one leaf ≥80% Relatively even and fresh No mechanical damage No impurities, spoiled leaves, or diseased/insect-infested leaves First grade One bud and one leaf ≥50% Relatively even and fresh No mechanical damage No impurities, spoiled leaves, or diseased/insect-infested leaves 5.2 Processing Requirements 5.2.1 Process Flow Needle-shaped white tea: Fresh leaves - spreading - greening - stripping - drying - sorting - finished tea. Flat-shaped white tea: Fresh leaves - spreading - greening - stripping - flattening - secondary drying - aroma extraction - sorting - finished tea. 5.2.2 Hygiene Requirements during Production They shall comply with the provisions of GB 14881. 5.3 Sensory Quality Requirements 5.3.1 Basic Requirements Normal quality, no abnormal odor or flavor, no spoilage, and no non-tea impurities. 5.3.2 Sensory Quality The sensory quality shall comply with Table 2. Table 2: Sensory Quality Classification Appearance Internal Quality Leaf shape Broken particles Purity Luster Aroma Flavor Infusion color Leaf bottom Straight strips Straight and even Clean and pure Light green with jade-like color Fresh and mellow Light green, transparent, and clear Bud and leaf in clusters White veins on green leaves Flat-shaped Flat and even Clean and pure Light green with jade-like color Fresh and mellow Light green, transparent, and clear Bud and leaf in clusters White veins on green leaves 5.4 Physical and Chemical Indicators Requirements The physical and chemical indicators shall comply with Table 3. Table 3: Physical and Chemical Indicators Classification Indicator Water content (mass fraction) /% Total ash (mass fractio