Iranco 杂志团队
技术规格、重量分级、质控实验室检测、出口包装要求与工业供应策略
出口指南 · 白壳蛋 · 工业采购
白壳鸡蛋：食品工业分级与采购指南
技术规格、重量分级、质控实验室检测、出口包装要求与工业供应策略
本指南帮助食品厂采购经理与国际贸易商按重量公差、实验室检测和冷链标准下单，以优化加工成本。
白壳蛋是乳化、海绵结构、热凝胶和粘结的关键原料。伊朗年产超过 133 万吨，结构性过剩约 10–13.5 万吨。连续化生产线若不分级 bulk 采购属于战略失误。
1. Commercial position and geography of white egg production in Iran
Modern layer farms across central, northern and western Iran balance domestic supply and export surplus. Annual output exceeds 1.3 million tonnes, mostly white Leghorn strains. Qom, Tehran, Alborz, Qazvin, Isfahan, East Azerbaijan and Razavi Khorasan are industrial hubs.
Per-capita use is about 14.5 kg/year; domestic offtake near 1.18 million tonnes still leaves 130–160 thousand tonnes for export. Automated collection and veterinary oversight are structural advantages.
2. Weight grading, standard sizing and physical attributes
Industrial buyers need uniform weight classes because automatic breaking lines reject mixed lots. The table summarises Small through Jumbo grades and typical processing uses.
| Weight grade | Single egg (g) | 180-count net (kg) | Gross with trays (kg) | Optimal processing use |
|---|---|---|---|---|
| Small | < 53 | < 9.54 | 10.30–10.50 | 液蛋/蛋粉 |
| Medium | 53–62.9 | 9.54–11.32 | 10.60–12.10 | 蛋黄酱/肉制品 |
| Large | 63–68 | 11.34–12.24 | 12.30–13.10 | 烘焙出口 |
| Extra Large | 68.1–73 | 12.25–13.14 | 13.20–14.00 | 冷冻面团/餐饮 |
| Jumbo | > 73 | > 13.14 | > 14.00 | 蛋黄分离 |
3. Technical specifications expected in food processing
Purchase documents must state chemical and functional parameters matched to each processing line.
| Parameter | Expected range | Buyer / QC importance |
|---|---|---|
| Albumen % | 56–60% | 起泡/海绵 |
| Yolk % | 28–32% | 乳化 |
| Shell % | 9–11% | 运输强度 |
| Albumen Brix | 11.5–12.5% | 蛋粉得率 |
| Yolk Brix | 48–52% | 酱体 |
| Albumen pH | 7.6–9.2 | 鲜度 |
| Yolk pH | 6.0–6.6 | 蛋黄膜 |
Bakery, biscuit and sponge lines
Albumen proteins stabilise foam; stale whites collapse baked volume.
Mayonnaise and sauce plants
Yolk lecithin builds oil-in-water emulsion; vitelline membrane must stay intact.
Cooked meat and sausage
Heat-set egg protein binds fat and moisture; controlled micro load limits spoilage.
Liquid and powder plants
Medium and small grades; albumen and yolk Brix drive dryer energy and powder yield.
4. Quality grading, shell structure and defects
Premium eggs show clean intact shells without faecal smears or external blood. Cuticle integrity is the first microbiological barrier.
- Hairline cracks: visible under candling; bacterial ingress path.
- Blood and meat spots: follicle rupture; hurt appearance of liquid egg.
- Air cell height: under 4 mm when fresh; over 8 mm indicates age.
- Chalaza and yolk displacement: weakened protein anchors let yolk float.
Professional contracts cap breakage and cracks at cold-store unload around 2–3%.
5. Laboratory tests and QC indices
Physicochemical and microbiological release tests prevent incompatible lots entering continuous production.
| Test | Method / equipment | Grade A | Industrial B | Importance |
|---|---|---|---|---|
| Haugh Unit | Tripod micrometer | ≥ 72 | 60–71 | 蛋白鲜度 |
| Yolk Index | Height / diameter | 0.38–0.44 | 0.30–0.37 | 分蛋线 |
| Shell thickness | Edge micrometer | 0.35–0.42 mm | 0.30–0.34 mm | 抗破损 |
| Salmonella | 25 g enrichment | Negative | Negative | 食品安全 |
| TVC | Plate count (CFU/g) | < 5×104 | < 105 | 腐败风险 |
| Antibiotic MRL | ELISA / rapid | Below official MRL | Below official MRL | 发酵安全 |
با افزایش دما، واحد هاو کاهش و زرده پهن میشود؛ پایش روزانه وضعیت نگهداری قبلی را آشکار میسازد.
6. Quarantine rules, standards and customs clearance
White egg exports face strict avian quarantine to block highly pathogenic influenza and other poultry diseases.
- Farm registration in the national sanitary traceability system and valid sanitary code.
- Periodic negative AI and Newcastle monitoring certificates.
- No surface faecal contamination; compliance with national standard 219.
- Gregorian lay and expiry jet-print with food-grade ink.
- Commercial undertaking to clear customs before shelf expiry.
Fresh unfertilised table eggs clear under 0407.21.10 (distinct from hatching eggs 0407.11).
7. Industrial and export packaging engineering
Weak board or damp pulp trays raise breakage on lower pallet tiers. The export default is a 180-egg master carton with six 30-egg pulp trays.
| Component | Technical spec | Functional role |
|---|---|---|
| 主箱 | 34.5 × 31.7 × 31.7 cm | 托盘适配 |
| Board | 5-ply B/C flute | 侧压 |
| BCT | ≥ 450–500 kgf | 堆码 |
| 纸浆托 | 模压纤维 | 减震 |
| Pallet | 100 × 120 cm | 缠绕/护角 |
Pulp trays must be new, dry and odour-free; perforated shrink wrap limits condensation in hot destinations.
8. Cold chain, logistics and transit risks
Eggs remain metabolically active; cold-chain breaks quickly erode Haugh units and protein functionality.
| Logistics variable | Short haul (<72h) | International reefer | Non-compliance impact |
|---|---|---|---|
| 运输温度 | 10–15 °C | 2–4 °C | 哈氏下降/微生物 |
| RH | 70–75% | 75–80% | 失水/霉变 |
| 波动 | ≤ 2 °C | ≤ 1 °C | 壳面凝露 |
| 至边境时间 | ≤ 3 days | ≤ 5 days | 货架期 |
Shell sweating after cold cargo meets humid air is the main risk; trucks need air suspension and temperature loggers.
9. Regional target markets and competitive position
Water-stressed neighbours rely on imports; Iran supplies via fast land bridges and Gulf ports.
| Destination | Share of demand | Grade & pack | Clearance requirements |
|---|---|---|---|
| Iraq | 40–50% | 180-ct, 11.5–12.5 kg | 迈赫兰等口岸 |
| Afghanistan | 20–25% | 180-ct, 10.5–11.5 kg | 口岸 |
| UAE | 10–15% | 5-ply, 60–65 g | GSO/公历喷码 |
| Qatar / Bahrain | 5–8% | 防潮包装 | MRL 检验 |
| Russia | 新兴 | Euro pallet, cold-stable | 兽医协议 |
10. Regional competitor comparison
Iran competes with Turkey, India and Ukraine in regional white-egg trade.
| Country | Strength | Structural limit | Price position |
|---|---|---|---|
| Iran | 陆运3–5天 | 出口政策波动 | 有竞争力 |
| Turkey | 分级品牌 | 饲料能源 | 中高 |
| India | 产量大 | 海运周期长 | 低价 |
| Ukraine | 液蛋/蛋粉 | 黑海物流 | 中等 |
Three- to five-day land transit lets Iranian loads arrive with firm albumen and high freshness.
11. Pricing structure, contracts and industrial cost
Bulk contracts price per kilogram of carton net weight; industrial cost models focus on dry matter minus shell and board.
12. Ten-point importer checklist before firm order
Procurement managers should verify the following before signing a firm contract:
13. Official request-for-quote (RFQ) guide
Vague RFQs such as “one container of eggs” prevent like-for-like bids. A standard RFQ includes:
- 季节：春夏适合加工厂 bulk 采购；秋冬零售需求推高基价。
- 重量级：10.5 kg 以下净重纸箱单价较低；单枚 65 g 以上为出口 premium。
- 饲料成本：玉米豆粕等占 farm 成本 70% 以上。
- Incoterms：EXW 与 FCA/CPT、FOB 价格结构不同。
- 重量与公差：单枚区间（如 60–63 g）及 180 枚箱均值（如 11.5 kg ± 200 g）。
- 破损/毛细裂纹上限：卸货通常 2–2.5%。
- 最低 Haugh：HU > 70 书面承诺。
- 微生物：25 g 沙门氏菌阴性，TVC 低于国标临界值。
- 蛋壳清洁无粪污血斑。
- 新五层纸箱，BCT 足够。
- 公历喷码。
- 装运前检验。
- 核验 farm 卫生代码。
- 2–4 °C 冷藏箱与温度记录仪。
- 产品：白壳鲜蛋，未受精，机械分级。
- 重量级与 180 箱均值。
- 数量：箱数或吨位（例 1250–1400 箱/柜）。
- 包装：五层出口箱、标准托盘、新纸浆托。
- 壳面标识：公历日期与 farm 代码。
- 交货：边境、港口或买方冷库。
- COA：沙门氏菌、Haugh、TVC、抗生素 MRL。
可在 Iranco 提交含产品、包装与目的地的采购请求。
通过 Iranco 出口白蛋供应
Iranco 支持 bulk 买方按重量级、纸箱、喷码与吨位登记供应需求。请在 Iranco 登记技术规格与采购量以匹配货源。
联系 Iranco常见问题
食品厂为何常选白壳蛋？
营养相当，白羽系饲料转化更好，照蛋检 defect 更清晰。
哈氏单位含义？
浓蛋白高度与蛋重对数关系；72 以上为优。
运输允许失重？
3–5 天通常 0.5–1.5%。
酱料线蛋黄膜为何破裂？
陈蛋、不当温度、水分迁移与颠簸。
伊朗出口询价需哪些信息？
吨位、180 箱重、五层箱、公历喷码、贸易术语。
集装箱最低壳厚？
0.35–0.40 mm。
如何直采农场？
兽医注册 farm、AI 阴性、新箱、冷藏链；经 Iranco 提交。
出口前是否水洗？
否；非工业水洗破坏 cuticle 并开放孔隙。
分析总结
白蛋在食品加工中是功能性原料；bulk 成功依赖重量分级、Haugh、微生物控制、冷链与五层纸箱。
伊朗 133 万吨产能支撑区域供应；清晰技术合同降低 border 扣货风险。
