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食品專業(yè)英語(yǔ)重點(diǎn)句翻譯-預(yù)覽頁(yè)

 

【正文】 in a crystal lattice. Unsaturated fats have double bonds that introduce kinks into the hydrocarbon chain making crystal formation more difficult.飽和脂肪有一個(gè)均一一致的形狀,這使得他它們能夠在晶格中聚合起來(lái)。這些天然存在的分子可以通過(guò)采用非極性有機(jī)溶劑萃取的方法,在細(xì)胞和組織中分離得到。4. Waxes are mixtures of esters of long chain carboxylic acids and long chain alcohols. The carboxylic acids usually have an even number of carbon atoms, ranging from 16 to 36, and the long chain alcohols also have an even number of carbon atoms, ranging from 24 to 36.蠟是一種由長(zhǎng)鏈羧酸和長(zhǎng)鏈醇通過(guò)脂鍵組成的酯的混合物。換句話說(shuō),催化劑不會(huì)改變反應(yīng)物與產(chǎn)品之間的能量平衡,只是降低反應(yīng)物與產(chǎn)品之間的能量差值。8. Thus we can describe them in terms of their primary, secondary, tertiary, and in many cases, quaternary structure. They are long chains of amino acid units held together by peptide bonds, looped and folded into secondary and tertiary (and often quaternary) structures by disulfide bonds, hydrophobic interactions, and salt bridges.這樣我們能從蛋白質(zhì)一級(jí),二級(jí),三級(jí)和四級(jí)結(jié)構(gòu)方面來(lái)描述酶:它們是由氨基酸通過(guò)肽鍵結(jié)合的單位所組成,以纏繞折疊的方式,由二硫鍵,疏水鍵,鹽橋而構(gòu)成二級(jí)和三級(jí)結(jié)構(gòu)的許多長(zhǎng)鏈。s active site (lockandkey model) or because the enzyme39。在這種方式中,營(yíng)養(yǎng)素組成機(jī)體的有機(jī)部分,并依據(jù)控制他們行為的生理和生化過(guò)程,發(fā)揮他們的功能。我們需要這些營(yíng)養(yǎng)素提供能量、建造和維持身體組織、調(diào)節(jié)生理反應(yīng),這就是食品必須營(yíng)養(yǎng)素在身體中的三大功能。這個(gè)過(guò)程包括了攝入消化食物,和吸收與應(yīng)用,或者代謝食品中的營(yíng)養(yǎng)素。18. However, how can we determine the exact requirement for nutrients for each individual since we are all different? The answer is that the exact requirement cannot be calculated。 RDA, therefore, were set high enough to ensure that, if quantities of nutritients in the food being served met this standard, they would meet the needs of individuals with the highest requirements.因此,RDA被設(shè)置成高標(biāo)準(zhǔn),可以確保如果食物中營(yíng)養(yǎng)素的量能達(dá)到這個(gè)標(biāo)準(zhǔn),它們也會(huì)滿足需求量最高的個(gè)體的要求。23. Chemicals in our food supply e from six sources. They are industrial accidents, intentional fraud, natural pounds, food additives, pesticides, and environmental pollutants. All require a different concept of food safety a different approach.在我們食品供應(yīng)的化學(xué)物質(zhì)來(lái)源于六個(gè)方面,他們是工業(yè)事件,認(rèn)為欺騙,自然化合物,食品添加劑,農(nóng)藥以及環(huán)境污染物質(zhì)。例如加入到油抗氧化劑能阻止氧化變臭,防腐劑阻止食品的腐敗,著色劑是食品具有更吸引人的外觀等等。這些食品就像是在家庭里一樣準(zhǔn)備制作的,然后分析其中殺蟲(chóng)劑、工業(yè)化合物、重金屬、放射性核素、重要的礦物質(zhì)的實(shí)際水平
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