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Table Grape vs Wine Grape: Commercial Distinctions

Table grapes and wine grapes are distinct commercial categories with different variety requirements, production practices, and buyer profiles. Table grapes are selected for seedlessness (Thompson Seedless/Crimson/Arra), large berry size (≥18 mm diameter for Class I), Brix ≥16°, uniform bunch weight (300–500 g per bunch), firm texture for transit, and visual appeal. Wine grapes (Cabernet Sauvignon, Chardonnay, Merlot, Shiraz) are selected for sugar/acid balance, skin phenolics, and aromatic character. Wholesale buyers in the fresh produce trade source table grapes; wineries source wine grapes through entirely separate agricultural supply chains. IQF frozen grapes (seedless Thompson and Crimson) represent a growing third category primarily used by smoothie manufacturers and food service.

Key Commercial Table Grape Varieties

Thompson Seedless (Sultana): the world's most widely-planted table grape variety; green/yellow-green, elongated berry, Brix 16–18°; origins include USA (California), Chile, South Africa, India, and Turkey. Crimson Seedless: dark red, large berry, excellent shelf life, Brix 16–18°; major origins are USA, Chile, and South Africa. Red Globe: large, seeded, deep red — dominant in Asian markets (China, Vietnam, Thailand) where seeded grapes remain preferred. Arra varieties (Arra 15, Sweet Globe, Sweet Celebration): proprietary Arra/IFG breeding program varieties increasingly planted in South Africa, Chile, and Peru; typically very large berries, extended shelf life, superior flavour. Ralli (Muscat Hamburg derivatives): regional varieties in Turkey and Italy. Autumn Royal (black seedless): late-season supply extension from California and Chile.

Quality Specifications and EU Marketing Standards

EU Commission Delegated Regulation 2019/428 defines marketing standards for table grapes under Class Extra, Class I, and Class II. Key requirements for Class I: minimum Brix 12° (EU standard; buyers typically set internal standards of ≥16°), bunch weight minimum 75 g, minimum berry diameter 12 mm for elongated varieties / 14 mm for round varieties, uniformity in colour, shape, and size. Defect tolerances define maximum limits for sunburn, shot berries, and raisining. South Africa uses a parallel grading system (Class 1/2/3) audited by PPECB inspection. Chile grades under SAG-audited protocols. For premium export, buyers commonly specify bunch weight ranges (200–500 g or 300–500 g), a minimum berry diameter (typically ≥18 mm), and Brix ≥16°.

Cold Chain and SO₂ Pad Technology

Table grapes are cold chain-sensitive and highly susceptible to Botrytis cinerea (grey mould) during sea freight. Optimal transit temperature is −1°C to 0°C (must not drop below −2.5°C to avoid freeze damage). SO₂ (sulphur dioxide) slow-release generator pads are placed inside cartons to control Botrytis during 2–4 week sea freight. Pad types: fast/slow dual-release pads designed to release a high initial SO₂ dose on day 1–2 followed by slow-release maintenance over 3–4 weeks. SO₂ residue on berries must not exceed 10 mg/kg at consumer level (EU). Pre-cooling to 0°C within 4–6 hours of harvest via forced-air cooling is critical. Controlled atmosphere (CA) storage: 1–3% O₂, 3–5% CO₂, 90–95% RH extends shelf life significantly for CA-stored parcels held before export.

Key Export Origins and Certifications

South Africa (Western Cape — Hex River Valley, Berg River, Orange River): dominant southern hemisphere table grape exporter; GlobalGAP and SIZA social compliance mandatory for UK/EU supermarket chains; PPECB export inspection; window October–April. Chile (Atacama, Coquimbo, Maule): world's second-largest table grape exporter; ASOEX-represented; SAG phytosanitary; window November–April. Peru (Ica Valley): fastest-growing table grape exporter; Arra and IFG varieties dominant; Senasa phytosanitary; window October–February. Egypt (El Minya, Luxor, Assiut): competitive pricing, Red Globe and Thompson Seedless; window July–October. USA (California — San Joaquin Valley): Crimson, Thompson, Autumn Royal; window July–November. Italy and Spain: European-season supply May–November. Fairtrade certification available from South Africa (WIETA/Fairtrade) and Chile.

Frequently Asked Questions