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      <title>metodi di conservazione degli alimenti by BERTOZZI MANUEL</title>
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      <pubDate>2021-02-25 09:26:18 UTC</pubDate>
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         <title>Rimozione dell&#39;acqua</title>
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         <pubDate>2021-02-25 09:30:35 UTC</pubDate>
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         <title>Freddo</title>
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         <pubDate>2021-02-25 09:31:56 UTC</pubDate>
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         <title>Caldo</title>
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         <pubDate>2021-02-25 09:32:03 UTC</pubDate>
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         <title>Conservanti naturali</title>
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         <title>Conservanti artificiali</title>
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         <title>Essiccazione</title>
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         <pubDate>2021-02-25 09:34:38 UTC</pubDate>
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         <title>Concentrazione</title>
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         <title>Liofilizzazione</title>
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         <pubDate>2021-02-25 09:35:09 UTC</pubDate>
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         <title>Refrigerazione </title>
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         <pubDate>2021-02-25 09:38:20 UTC</pubDate>
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         <title>Congelamento</title>
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         <pubDate>2021-03-07 13:38:55 UTC</pubDate>
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         <title>Surgelazione</title>
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         <pubDate>2021-03-07 13:39:17 UTC</pubDate>
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         <title>Pastorizzazione</title>
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         <pubDate>2021-03-07 13:40:37 UTC</pubDate>
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         <title>Sterilizzazione</title>
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         <pubDate>2021-03-07 13:41:04 UTC</pubDate>
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         <title>Affumicatura</title>
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         <pubDate>2021-03-07 13:41:41 UTC</pubDate>
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         <title>Sale</title>
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         <pubDate>2021-03-07 13:42:59 UTC</pubDate>
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         <title>Olio</title>
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         <pubDate>2021-03-07 13:43:09 UTC</pubDate>
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         <title>Aceto</title>
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         <pubDate>2021-03-07 13:43:38 UTC</pubDate>
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      <item>
         <title>Zucchero</title>
         <author>bertozzi_manuel</author>
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         <pubDate>2021-03-07 13:43:51 UTC</pubDate>
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         <title>Alcol</title>
         <author>bertozzi_manuel</author>
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         <pubDate>2021-03-07 13:44:16 UTC</pubDate>
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         <title>Irradiazione </title>
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         <pubDate>2021-03-07 13:46:33 UTC</pubDate>
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         <title>Additivi</title>
         <author>bertozzi_manuel</author>
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         <pubDate>2021-03-07 13:46:52 UTC</pubDate>
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         <title>La conservazione degli alimenti</title>
         <author>bertozzi_manuel</author>
         <link>https://padlet.com/bertozzi_manuel/m3j75578jc1cz9et/wish/1278645399</link>
         <description><![CDATA[<div>È esperienza comune constatare che a temperatura ambiente gli alimenti si deteriorano, cioè perdono le loro caratteristiche originarie. Questo avviene per vari motivi: </div><ul><li>azione di microrganismi (batteri, muffe, lieviti) </li><li>azione di insetti e roditori </li><li>azione di enzimi (presenti naturalmente in tutti gli alimenti) </li><li>influenza di luce, temperatura, umidità, ossigeno </li></ul><div><strong>Scopo della conservazione è contrastare le cause di deperimento dei cibi e mantenere inalterate le loro proprietà</strong> chimiche (la loro composizione), fisiche (il loro stato), organolettiche (sapore, odore e colore) e nutrizionali (presenza di proteine, grassi e carboidrati, vitamine, sali minerali, acqua).</div>]]></description>
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         <pubDate>2021-03-07 14:26:39 UTC</pubDate>
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      <item>
         <title>Come conservare gli alimenti</title>
         <author>bertozzi_manuel</author>
         <link>https://padlet.com/bertozzi_manuel/m3j75578jc1cz9et/wish/1278650308</link>
         <description><![CDATA[<div>Accanto a metodi rinnovati o inventati dalle moderne tecnologie, ve ne sono alcuni di antichissimi. </div><div>I <strong>metodi fisici</strong> agiscono sullo stato del prodotto, servendosi della sottrazione d'acqua e d'aria, dell'azione del freddo, del caldo e delle radiazioni.</div><div>I <strong>metodi chimici</strong> influiscono sulla composizione chimica dell'alimento, trattandolo con cibi con sostanze naturali o additivi chimici.</div><div>L'affumicatura è un metodo chimico-fisico, che abbina le due tipologie di mezzi di conservazione.</div><div>I <strong>metodi biologici</strong> rientrano fra quelli chimici, in quanto sfruttano gli effetti positivi delle trasformazioni prodotte da alcuni microrganismi. </div>]]></description>
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         <pubDate>2021-03-07 14:29:19 UTC</pubDate>
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