PC 6.01 - باحات التجفيف

الرجاء إنشاء حساب ل دورة قبل البدء بالدرس

  • عند تجفيف القهوة على الأرض، يجب ألا يزيد عمق طبقة الحبوب عن 5 سم (2 بوصة) للكرز الطازج و2.5 سم (1 بوصة) للقهوة الرطبة غير المقشورة (وينتغنز، 2004). فإذا كانت الطبقات سميكة جدًا، ستستغرق عملية التجفيف وقتًا طويلًا. يواجه بعض منتجي القهوة مشكلة توفير المساحات الكافية لباحات تجفيف القهوة خلال فترة زمنية معقولة، الأمر الذي قد يفوق إمكانيات بعض المزارع. وبخصوص المزارع التي تعالج القهوة بالطريقة الطبيعية، فإن تجفيفها سيتطلب مساحات أكبر بكثير. </span><span style="font-weight: 400;">According to Wintgens (2004), 1 tonne (1.12 US tons) of fresh cherries being put through the natural process require 20 square metres (215 square feet) of drying area. Piled at a 5–6 cm depth (40 kg cherries/m²), they will take approximately 3 weeks to dry. </span><span style="font-weight: 400;">In Brazil, it is recommended that the size of the drying patio be calculated as 5% of the number of coffee trees in production (e.g., 100,000 coffee trees × 0.05 = 5000 m²).</span><span style="font-weight: 400;">One tonne of pulped coffee needs far more room to dry: 80 m² of drying area is needed for coffee at a depth of 3–4 cm (10–12 kg wet parchment/m²). Drying time for wet parchment is approximately 14 days. </span><span style="font-weight: 400;">Regardless of what process millers use, they usually rake cherries and parchment into piles during the midday, when the UV exposure is at its most intense. Depending on the intensity of the light in a particular region, lots will often be protected during the hottest hours of the day by a roof or a البلاستيك film. The reason for this level of care is that the parchment layer is prone to developing fissures (small cracks) if it is exposed to too much sunlight. The undamaged parchment — and the skin, in the case of naturals — provide the ideal protection for coffees, all the way up until lots are ready for dry-milling just prior to export. Protecting the parchment and skin is important in order to lengthen the coffee’s shelf life.
العودة إلى: المعالجة > Drying

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