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src="https://tyunfile.71360.com/UploadFile/hubeifrd/637347498710058594/9440323.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="vew3bht" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/hubeifrd/637347498710058594/9440323.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="j28tdur" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>湖北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東防腐劑批發(fā),防腐劑</p><p><span>***更新：</span>2021-01-23 05:17:05</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="o2jk3ae" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">湖北福潤德食品原料有限公司</a></p><p><span>聯(lián)系人：</span>陳永耀</p><p><span>郵箱: </span>329748164@qq.com</p><p><span>電話: </span>13237199399</p><p><span>傳真: </span>132_37199399</p><p><span>網(wǎng)址: </span>https://hbfrdsp.1688.com</p><p><span>手機: </span>132-37199399</p><p><span>地址: </span>東辛安渡辦事處徐家臺1號(15)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="88liahj" class="page-proshow02"><p class="title">詳細說明</p><div id="tn8xzry" class="box"><p><h1> <span style="font-size:16px;">苯甲酸及其鹽</span><span style="font-size:16px;">防腐劑的作用機理和安全性</span><span style="font-size:16px;"></span> </h1> <p> <span style="font-size:16px;">苯甲酸及其鹽類防腐劑為結(jié)晶狀粉末或白色顆粒，無臭，微帶安息香氣味。苯甲酸及其鹽是食品工業(yè)中常見的一種防腐保鮮劑。其防腐機理是苯甲酸類防腐劑具有脂溶性強的特點，容易通過細胞膜進入細胞體內(nèi)，導(dǎo)致微生物細胞膜的通透性**擾，廣東防腐劑批發(fā)，細胞膜對相關(guān)氨基酸的吸收被有效，苯甲酸分子是以酸化細胞體內(nèi)儲堿的方式使細胞的呼吸酶系失去活性，從而對食品起到防腐保鮮的作用，廣東防腐劑批發(fā)。</span> </p> <p> <span style="font-size:16px;">安全性：一般情況下，苯甲酸被認為是安全的，在食品中添加少量苯甲酸時，對人體并無。人體攝入少量的苯甲酸后，苯甲酸與體內(nèi)的一種氨基酸生成一種無害的新物質(zhì)，隨尿液排出，廣東防腐劑批發(fā)。</span> 食品防腐劑廠家，食品防腐劑現(xiàn)貨供應(yīng)湖北福潤德食品原料有限公司。廣東防腐劑批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東防腐劑批發(fā),防腐劑" src="https://tyunfile.71360.com/UploadFile/hubeifrd/637347498710058594/9440323.png"></div><h1> <span style="font-size:16px;">防腐劑是什么?</span> </h1> <p> <br /> </p> <p> <span style="font-size:16px;">食品含有豐富的營養(yǎng)物質(zhì)，這些物質(zhì)可以給人體提供能量和豐富的營養(yǎng)素，但也容易被微生物污染，因此，一旦少量微生物侵染了食品，在短時間內(nèi)就可能在食品中迅速生長繁殖，某些細菌和還可以產(chǎn)生大量的，引起食品變質(zhì)和食物中毒的發(fā)生。這就是食品中添加防腐劑的原因。</span> </p> <p> <br /> </p> <p> <br /> </p> <p> <span style="font-size:16px;">“食品中添加防腐劑的主要作用是微生物的生長和繁殖，延長食品的保存時間。”北京工商大學(xué)食品學(xué)院教授王靜解釋說，防腐劑可分為化學(xué)防腐劑和天然防腐劑。其中化學(xué)防腐劑又以“有機”和“無機”來具體劃分。苯甲酸及其鹽類、山梨酸及其鹽類、對羥基苯甲酸及其酯類等屬于“有機”類別。亞硫酸及其鹽類、二氧化碳、亞硝酸鹽類、游離氯及次氯酸鹽等則屬于“無機”類別。而天然防腐劑通常是從動植物和微生物的代謝產(chǎn)物中提取，如乳酸鏈球菌素是從乳酸鏈球菌的代謝產(chǎn)物中提取得到的一種多肽物質(zhì)。</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">她說，我國食品安全國家標(biāo)準對食品防腐劑使用范圍、使用量均有嚴格的規(guī)定，且都經(jīng)過了大量的科學(xué)實驗，證實允許使用的食品防腐劑對人體不會產(chǎn)生急性、亞急性或慢性危害，但如果食品中超量、超范圍使用防腐劑就會對消費者的身體健康造成一定損害。</span> </p> <span style="font-size:16px;"></span> <p> <br /> 山東食品防腐劑經(jīng)銷商食品級防腐劑廠商，食品防腐劑現(xiàn)貨供應(yīng)湖北福潤德食品原料有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東防腐劑批發(fā),防腐劑" src="https://tyunfile.71360.com/UploadFile/hubeifrd/637347498463867188/2046088.png"></div><h1> <span style="font-size:16px;">什么是食物防腐劑？</span> </h1> <p> <br /> </p> <p> <span style="font-size:16px;">防腐劑是指加入食品中能防止或延緩食品的食品添加劑，其本質(zhì)是具有微生物增殖或殺死微生物的一類化合物。</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">防腐劑安全嗎？</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">在不超過安全劑量的情況下，防腐劑對人體是無害的。</span> </p> <p> <br /> </p> <p> <br /> </p> <p> <span style="font-size:16px;">我國對防腐劑的使用有著非常嚴格的規(guī)定，防腐劑必須符合下列標(biāo)準：</span> </p> <p> <span style="font-size:16px;">1.合理的使用對人體無害；</span> </p> <p> <span style="font-size:16px;">2.不會影響消化道菌群；</span> </p> <p> <span style="font-size:16px;">3.在消化道內(nèi)可以降解為食物的正常成分；</span> </p> <p> <span style="font-size:16px;">4.不會影響素的使用；</span> </p> <p> <span style="font-size:16px;">5.對食品熱處理時不會產(chǎn)生有害成分。</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">我國批準使用的食品防腐劑，在被批準使用前經(jīng)過了大量嚴謹?shù)目茖W(xué)實驗，有動物飼養(yǎng)、毒性毒理試驗和鑒定，同時國家也出臺了一系列法規(guī)和標(biāo)準對食品防腐劑品種、數(shù)量和范圍進行嚴格的控制。</span> </p> <p> <span style="font-size:16px;">除此之外，很多食品本身不含防腐劑，如罐頭食品，含鹽和糖極高的食品，還有一些水分含量較低的食品如方便面、掛面等。罐頭進行灌裝時，會將其中的細菌和芽孢徹底殺滅，之后進行密封，隔絕外面的細菌，所以它不需要防腐劑；大量的鹽和糖起到防腐劑的作用，細菌在沒有水的環(huán)境下無法繁殖。</span> </p> <span style="font-size:16px;"></span> <p> <br /> </p><h1> <span style="font-size:16px;">沒有防腐劑的食品，可能更危險說到這里</span> </h1> <p> <span style="font-size:16px;">可能有些朋友又會說了，反正防腐劑能不吃就不吃。</span> </p> <p> <span style="font-size:16px;">這話沒毛病。防止食品變質(zhì)的方法有多種，防腐劑只是其中一種，如果有其它更適合的方法替代當(dāng)然是可以的。</span> </p> <p> <span style="font-size:16px;">但是，你有沒有想過，有些食品本身就很受微生物歡迎，又沒有經(jīng)過嚴格的消毒殺菌，也沒能進行合理儲藏，要是不添加防腐劑，是不是會變得危險呢？</span> </p> <p> <span style="font-size:16px;">就拿那些自制的不添加防腐劑的生腌海鮮來說吧，這些海鮮本身就營養(yǎng)豐富，又不經(jīng)過加熱滅菌處理，只是依靠腌制（加白酒等等），還不足以充分殺菌[6]，要是還不能夠好好儲藏，就會加速食品的變質(zhì)了呀！</span> </p> <p> <span style="font-size:16px;">食品變質(zhì)后，不僅感官性狀會發(fā)生改變，而且營養(yǎng)價值也會降低，另外還可引起人體不良反應(yīng)，甚至中毒。</span> </p> <p> <span style="font-size:16px;">說個具體例子吧，很多人愛吃的腌臘肉制品（如臘肉、中式火腿、臘腸），如果在制作過程中沒有適當(dāng)添加（亞）硝酸鹽發(fā)揮抑菌（特別是肉毒梭狀芽孢桿菌）[7]作用，就會有肉毒中毒的風(fēng)險。</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">另外，有些食品雖然不加防腐劑了，卻含大量鹽、糖，比如蜂蜜、肉干，多吃肯定也不健康。</span> </p> <p> <span style="font-size:16px;">總的來說，防腐劑并不是什么洪水猛獸，如果能夠合理使用，不僅能讓某些食品變得更安全，而且能讓你有機會選擇多樣化的食品哦！</span> 食品防腐劑有哪些，食品防腐劑現(xiàn)貨供應(yīng)湖北福潤德食品原料有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東防腐劑批發(fā),防腐劑" src="https://tyunfile.71360.com/UploadFile/hubeifrd/637347498497226563/4315949.png"></div><h1> <span style="font-size:16px;">食品防腐劑</span><span style="font-size:16px;"></span><span style="font-size:16px;">山梨酸及其鉀鹽</span> </h1> <p> <span style="font-size:18px;">同苯甲酸及其鈉鹽類似，食品中常使用的防腐劑還有山梨酸鉀（CH3CH=CHCH=CHCOOK）, 山梨酸鉀能有效地霉菌，酵母菌和好氧性細菌的活性，從而延長食品的保存時間，并保持原有食品的風(fēng)味。山梨酸（鉀）是一種不飽和脂肪酸（鹽），它可以被人體的代謝系統(tǒng)吸收而迅速分解為二氧化碳和水，在體內(nèi)無殘留，是國際上公認的無害的食品防腐劑，防腐效果也明顯高于苯甲酸類，是苯甲酸鹽的5-10倍，因此其應(yīng)用也更。下表為GB2760-2014中規(guī)定的山梨酸及其鉀鹽的使用量</span> </p> <p> <span style="font-size:18px;">苯甲酸及其鈉鹽和山梨酸及其鉀鹽是食品防腐劑中常用的兩種，尤其是后者，在日本所用的防腐劑中山梨酸及山梨酸鉀已高達90％以上。此外常見的食品防腐劑還有丙酸鈣、脫氫乙酸、對羥基苯甲酸脂類等。防腐劑在食品工業(yè)中已被使用，人們大可不必談防腐劑色變，只要規(guī)范使用，含防腐劑的食品一樣可放心食用。而且，防腐劑可限制食品中細菌和微生物的滋長，如可產(chǎn)生劇毒物質(zhì)肉的“肉毒菌”以及可產(chǎn)生強致物質(zhì)黃曲霉的“黃曲霉”等。</span><span style="font-size:18px;"></span> 食品防腐劑價格，食品防腐劑現(xiàn)貨供應(yīng)湖北福潤德食品原料有限公司。山東食用防腐劑生產(chǎn)廠家</p><p style="text-indent:25px">防腐劑的使用方法，食品防腐劑現(xiàn)貨供應(yīng)湖北福潤德食品原料有限公司。廣東防腐劑批發(fā)</p><h1> <span style="font-size:16px;">食品防腐劑的種類</span> </h1> <p> <span style="font-size:16px;">按照來源，可將食品防腐劑分為化學(xué)防腐劑和天然防腐劑兩大類。</span> </p> <p> <br /> </p> <p> <span style="font-size:16px;">1.1 酸型防腐劑 </span> </p> <p> <span style="font-size:16px;">常用的酸型防腐劑有苯甲酸、山梨酸和丙酸以及它們的鹽類等…。酸型防腐劑要在酸性條件下通過未解離的分子而起抑菌的作用，其防腐效果與pH 有關(guān)。酸型防腐劑之所以可以抑菌防腐，是由于其會干擾微生物的酶系統(tǒng)，使其不能行使正常代謝功能。同時酸型防腐劑對細胞膜的通透性有阻礙作用，會微生物的生長與繁殖。</span> </p> <p> <span style="font-size:16px;">酸型防腐劑中的苯甲酸價格低廉，廣泛應(yīng)用于醬油和化妝品等日常生活用品中，但苯甲酸及其鹽類的毒性副作用一直備受爭議。山梨酸對霉菌、酵母菌有很強的作用，是公認的高效低毒防腐劑，對食品風(fēng)味沒有影響，通常應(yīng)用于以面粉、魚肉、蛋禽等為原料加工而成的食品中。</span> </p> <p> <span style="font-size:16px;"><span style="display:none;"></span>1.2 酯型防腐劑</span> </p> <p> <span style="font-size:16px;">酯型防腐劑是指尼泊金酯類，我國普遍使用的是對羥基苯甲酸、乙酯和丙酯等。酯型防腐劑的作用機理是破壞微生物的細胞膜，使細胞內(nèi)的蛋白質(zhì)變性失活，從而破壞微生物的正常生理平衡。酯型防腐劑主要應(yīng)用于蔬果保鮮，較酸型防腐劑殺菌效果更強，其防腐效果也不會因為酸堿度的改變而改變，在胃腸道內(nèi)能迅速完全被吸收，并能水解成對羥基苯甲酸，而從尿中排出，不在體內(nèi)積蓄，因此毒性也比較低。</span> </p> <p> <br /> 廣東防腐劑批發(fā)</p></p><br /><p>文章來源地址: 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