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class="new91"> <h1>普洱茶曬青工藝之?dāng)偭?/h1> 發(fā)布時(shí)間：2024-01-30 </div> <div id="gwlvfpk" class="new92"> <div class="gwlvfpk" id="contentt"></div> 普洱茶的制作工藝：<br>「采摘－攤晾－殺青－揉捻－曬青」。<br>攤晾，一個(gè)看似簡(jiǎn)單的制茶工藝，卻暗藏玄機(jī)。<br>一攤晾的目的？<br>1、采摘的鮮葉應(yīng)盡快攤開(kāi)，避免采摘的鮮葉長(zhǎng)時(shí)間放置在背籮和袋內(nèi)，導(dǎo)致鮮葉透氣不好，被擠壓、悶到，發(fā)熱紅變，影響品質(zhì)。攤晾的目的并不僅僅是失水而是為了避免鮮葉發(fā)酵，導(dǎo)致紅梗紅邊！<br>2、鮮葉采摘后直接殺青除了品質(zhì)不佳，必然會(huì)發(fā)生糊鍋，導(dǎo)致成品帶焦糊味和焦片。<br>通過(guò)鮮葉的走水，鮮葉變得更為柔軟，讓鮮葉含水量降至適宜殺青的狀態(tài)。<br>二：“萎凋”和“攤晾”的區(qū)別？<br>“攤晾”主要是為了讓茶葉中的水分自然蒸發(fā)掉30%，使茶葉變?nèi)彳?，并散去青草氣味，整個(gè)過(guò)程主要是物理變化，并伴有輕微化學(xué)變化。<br>這要求攤晾要有厚度，一般為10公分左右，環(huán)境溫度在22℃一28℃之間效果最佳，攤晾的時(shí)間一般不超過(guò)3小時(shí)。進(jìn)行攤晾還可以讓茶葉軟化，殺青時(shí)不容易折斷。<br>“萎凋”需要讓茶葉散失更多水分，并會(huì)發(fā)生更多化學(xué)變化。在適度的水分散失之后，細(xì)胞膜透性增大，葉中所含酶類(lèi)活性增強(qiáng)，葉子中的大分子物質(zhì)蛋白質(zhì)，淀粉、不溶性原果膠物質(zhì)開(kāi)始發(fā)生降解，小分子葡萄糖、氨基酸、可溶性果膠等有利于成茶品質(zhì)的物質(zhì)增多，多酚類(lèi)物質(zhì)也有不同程度的氧化。<br>因此，“萎凋”過(guò)后的茶葉具有顏色稍微發(fā)紅，青草氣散失等特點(diǎn)。<br>紅茶、白茶、烏龍茶的制作就需要“萎凋”。<br> 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