• 魚油知識問答
    欄目:知識問答 發布時間:2017-05-15
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    前言 Introduction :

    魚油是什麽?顧名思義魚油就是指魚類的脂肪,是魚體內全部脂肪的統稱,包括體油、腦油和肝油,其主要成分是甘油三酯、VAVD、甘油醚、類固醇以及類脂等。

    What is fish oil? As its name implies, fish oil refers to the fat of fish. It is the collective name of all fat in fish including body oil, brain oil and liver oil. The main components of fish oil include triglycerides, VA and VD, glycerin ether, steroid, and lipid.

    魚油(特別是天然海洋魚油)中富含ω-3脂肪酸,尤其是二十碳五烯酸(EPA)和二十二碳六烯酸(DHA)。這是魚油與一般動、植物脂肪的顯著不同之處,EPADHA對保障動物體正常生長發育、消炎防病具有不可替代的作用,它們在動物體內不能合成,必須通過食物由外源供給。

    Fish oil, especially natural marine fish oil, contains Omega-3 fatty acids. Fish oil is particularly rich in EPA and DHA, which is significantly different from general animal and plant fats.

    EPA and DHA play irreplaceable roles in normal growth and development of organisms. They are anti-inflammatory and anti-disease gradients that cannot be synthesized in animal bodies and must be supplied by external sources like food.

      毛魚油是在生產魚粉過程中分離出來的副產品,毛魚油酸價高、雜質、水分含量大,不能直接用於喂養鰻、甲魚,否者容易致病,必須經過精煉和冬化處理,以獲得高品質的冬化魚油才能直接用於水產養殖。

    Crude fish oil is the by-product of fish meal, which contains high acid value, high impurities, and high moisture content. Crude fish oil cannot be used directly to produce feed, since it might cause disease of aquatic lives. Hence, refining and winterizing are required to produce high-quality winterized fish oil for aquaculture needs.

    按照魚油加工的標準工藝和魚油易氧化的特性,從毛魚油開始每個生產環節都采用氮氣保護,且整個生產過程中魚油都在密閉管道中輸送,成品魚油中添加適量的抗氧化劑,以確保成品的品質穩定。

    According to the guideline of fish oil processing, nitrogen is used as a protectant since fish oil is easy to be oxidized. Fish oil is transported inside the closed pipe during processing and antioxidants are added to ensure the stability of fish oil.


    1、魚油的分類和用途 Classification and use of fish oil.

    魚油按漁獲物來源可分為海洋魚油和淡水魚油兩大類,按魚種來分比較常見的有鯷魚油、沙丁魚油、鱈魚魚油、金槍魚油、魷魚油、三文魚油等。
       Fish oil can be classified into marine fish oil and freshwater fish oil based on the resources of the catching. Common fish oil includes anchovy oil, sardine oil, cod fish oil, tuna oil, squid oil, and salmon oil.

    天然海洋魚油EPADHA含量高,一般可達到15%--35%,主要用於保健食品、高端飼料生產上。而淡水魚油EPADHA含量很低,一般隻有2%--5%,主要用於低端飼料生產和在化工工業上。

    因此,天然海洋魚油營養價值要比淡水魚油高得多,市場價格也相應貴很多。

    Natural marine fish oil has high contents of EPA and DHA (15% ~ 35%). Hence, it can be used to produce health food and high-end feed production. Freshwater fish oil has low EPA and DHA content (2% ~ 5%), which is mainly used to produce low-end feed production or used in chemical industry. The nutritional value of natural marine fish oil is much higher than that of freshwater fish oil, therefore, the price of marine fish oil is much higher.

     

    2、魚油在飼料中主要作用 Main functions of fish oil in feed

    ①提供高熱能,改善料肉比,降低飼料係數 
    Provide high heat energy, improve meat ratio, and reduce feed coefficient.

    ②提供動物生長所必需的EPADHA,保障生物正常的新陳代謝,防病抗病。 

    Provide necessary EPA and DHA for animal growth, maintain normal metabolism, and prevent disease.

    ③提高誘食性,增強飼料嗜口性
    Improve sedation and enhances feed addiction.

    ④促進色素及脂溶性維生素吸收,養成品體色漂亮,賣相好  

    Promote the absorption of pigments and fat-soluble vitamins to make products attractive.

     

    3、魚油的品質好壞怎麽判定?進口魚油好還是國產魚油好? How to evaluate the quality of fish oil? Which one is better, imported fish oil or domestic fish oil?

    無論進口還是國產魚油,魚油好壞的判斷標準應該以檢測結果為依據,除了常規的指標(如氣味、酸價、過氧化值、茴香胺值、水雜)可通過精煉加工合乎標準外,EPADHA的含量的高低是魚油好壞的硬指標。
     Regardless of producers of fish oil, fish oil should be evaluated based on test results. Besides general indicators like smell, acid value, peroxide value, anisidine value, moisture, and impurities that can be adjusted to meet the standards during refining, EPA and DHA content is considered as an important indicator to evaluate the quality of fish oil.

    進口和國產的鯷魚魚油、沙丁魚油中的EPADHA含量一般都會在20%以上,所以營養價值高;而目前進口的三文魚魚油EPADHA的含量連10%都達不到,進口的鱈魚有也隻有14%左右,營養價值就大打折扣了。

    The EPA and DHA content of imported and domestic anchovy oil and sardine oil is generally over 20%, which have high nutritional value. The EPA and DHA content of imported salmon oil is lower than 10%, and that of imported cod oil is just about 14%, hence, such products have low nutritional value.


    4、怎樣判斷是毛油還是已經被精煉過的魚油,精製魚油有哪些優點? How to identify whether the fish oil is crude or refined? What are the advantages of refined fish oil?

    精製魚油的酸價應低於1,過氧化值都低於6,味道是比較純正的魚腥味,顏色經過精煉後相比同類毛魚油淺,呈金黃色至紅褐色,水分、雜質各控製在0.3%以下。

          The acid value of refined fish oil should be less than 1, and the peroxide value should be less than 6. Refined fish oil has a pure fishy taste and its color becomes lighter than the same kind of crude fish oil after refining., which varies from golden yellow to reddish brown. Meanwhile, the moisture and impurity of refined fish oil should be controlled below 0.3%.

    高品質的精製魚油都添加了專用的抗氧化劑或充氮氣保護,氧化穩定性比毛魚油大幅度提高,保證了飼料的穩定和安全。
      The oxidation stability of high quality refined fish oil is promoted by adding anti-oxidants or applying nitrogen protection. Hence, the stability and safety of refined fish oil is ensured.

     

    5、魚油生產是使用白土來脫色,生產中如果處理不好而產生殘留而影響品質,應如何避免? Silicon phosphorus soil is used to decolor fish oil, which might impact the quality of fish oil by residue during improper treatment. How to avoid such impact?

       在生產過程中采用多道過濾裝置和檢測手段。如:采用600目的不鏽鋼絲網過濾器,後道成品灌裝時再采用1000目的精密過濾器。最後檢測成品中雜質的含量,包括白土,確保產品的高純度。
       Multiple filtration devices and detection methods are applied in the production process. For example, 600 mesh stainless steel wire mesh filter is used during production and 1000 mesh precision filter is adopted during filling. Meanwhile, the final content of impurities including silicon phosphorus soil is tested to ensure the high purity of products.

     

    6、為什麽要用魚油?能不能用豆油來代替?  Why we use fish oil? Can we use soybean oil instead?

        魚油是自然界中唯一天然富含EPA、DHA的油脂,而EPA、DHA對於動物的正常生長發育非常的重要。第一,EPA能提高動物性腺的發育,提高繁殖能力。第二,EPA、DHA能提高動物對球蟲病的抵抗能力,降低炎症反應。第三,EPA、DHA能提高動物的免疫力,提高幼苗的存活率,讓動物的毛發更加光滑油亮。動物缺乏EPA、DHA產生非常大的危害,幼苗成活率下降、死亡率升高,生長受阻、飼料的利用率下降,還會降低動物的繁殖性能,並且發生局部糜爛。

    Fish oil is the only natural fat that is rich in EPA and DHA that are important gradients for the normal growth and development of animals.

    First, EPA can improve the development of animal's gonad and increase their reproductive capacity. Second, EPA and DHA can improve the resistance of animal to coccidiosis and reduce inflammation. Third, EPA and DHA can improve the immunity of animal and increase the survival rate of cubs. Fourth, EPA and DHA can make animal' hair smoother and brighter.

    The lack of EPA and DHA might lead to great harm to organisms. For example, the survival rate of cubs may drop, and the mortality rate may increase. The growth of animal might also be impeded, which leads to the decrease of the utilization of feeds. Meanwhile, the reproductivity of organisms can be impacted and partial erosion of bodies might occur.

        豆油和魚油的脂肪酸組成區別很大,不含EPA、DHA,所以功效完全不一樣,不能用豆油來取代魚油的營養價值。

    The fatty acid combinations of soybean oil and fish oil are significantly different. Soybean oil does not contain EPA and DHA, hence, it has different functions from fish oil. Therefore, soybean oil cannot replace fish oil in the perspective of nutrient values.

    7、魚油的保質期有多長,怎樣貯存比較合適? How long is the shelf life of fish oil? How to store fish oil properly? 

     高質量的成品魚油在完全與氧隔絕,且生產加工中基本脫除魚油中所含氧的情況下,一般保質期為二年。
       The normal shelf life of high-quality fish oil is usually 2 years when it is completely isolated from oxygen and oxygen containing in fish oil is removed in the production and processing.

    在使用魚油過程中應盡量減少與空氣和陽光接觸的機會,開蓋後魚油盡可能快用完,使用量少情況下最好選擇小包裝。桶裝魚油應儲存在陰涼、幹燥的環境下。

          It is necessary to reduce the exposure of fish oil to air and sunshine when it is used. After opening the lid, fish oil should be used up as soon as possible, and it is better to choose small packages when having limited needs. In addition, barreled fish oil should be stored in cool and dry environments.

     

    8、精製魚油這麽貴,還是用毛油好? Since the refined fish oil is expensive, will it be better to choose crude fish oil?

        毛油中含有大量的水分,雜質,尤其是蛋白,其酸價一般在515mg/g,其氧化誘導期基本隻有1.5小時左右,在飼料生產過程中,極易被迅速氧化、水解,產生對機體具有毒害作用的過氧化物、醛、酮等物質,嚴重影響到了飼料的品質,帶來壞處的同時還增加了風險,所以我們建議飼料廠盡量不要使用毛油。
       Crude fish oil has high contents of moisture and impurities, especially protein. Its acid value is generally 5 ~ 15 mg/g and its basic oxidation induction period is only about 1.5 hours.

     Moreover, crude fish oil is easy to be oxidized and hydrolyzed, which might produce peroxides, aldehydes, ketones, and other substances that can greatly affect feed quality., Hence, we suggest that feed factories not to use crude fish oil as long as possible.

    9、淡水魚油和海洋魚油有什麽區別? What are the differences between freshwater fish oil and marine fish oil?

        海洋魚油中富含有EPA,DHA等有效營養物質,而淡水魚魚油中含量很低甚至幾乎沒有。此外,淡水魚油農藥殘留和重金屬殘留也比海洋魚油嚴重的多。
       Marine fish oil is rich in effective nutrients like EPA and DHA, while freshwater fish oil contains few effective nutrients. Meanwhile, pesticide residue and heavy metal residue are greater in freshwater fish oil than those in marine fish oil.

     

    10、魚油中的EPA、DHA如何產生? Why fish oil is rich in EPA and DHA?

    魚本身是不產DHA,EPA的,是通過吃海洋中的含有DHA,EPA的藻類,而富集在魚體內的。不同的藻類,EPA、DHA的含量也不同,還受到不同區域,不同季節,不同氣候,不同魚種,不同食物鏈的影響,也會造成EPA、DHA含量的不同。

     Fish itself does not produce EPA or DHA but gathers such nutrients in its body by intaking algae that contains EPA and DHA. Therefore, the contents of EPA and DHA in fish oil are affected by fish species, algae species, regions, climates, and food chains.

    11、什麽叫冬化魚油,相比普通魚油有什麽優勢? What is winterized fish oil? What is the advantages of winterized fish oil compared with ordinary fish oil?

    通過冷過濾工藝生產出的魚油叫做冬化魚油。冬化魚油在冬化溫度以上的環境中保持澄清狀態,不會渾濁凝固。

    Fish oil that undergoes cold filtration is called winterized fish oil. Winterized fish oil remains clarified in temperature higher that the winterized temperature and does not become turbid or solidify.

    通過控製不同的冷過濾時的溫度,就可生產出不同的冬化魚油。和普通魚油相比,凝固點越低的冬化魚油不飽和脂肪酸含量越高,品質也越純。冬化魚油在低溫下能更加方便使用。

    Different winterized fish oil can be produced by controlling different temperatures during cold filtration. Compared with normal fish oil, winterized fish oil that has lower freezing point has more unsaturated fatty acid and higher purity. It is also more convenient to use winterized fish oil at low temperature.

     

    12、外噴油應該用什麽樣的魚油? What kind of fish oil should be used for external spraying?

    飼料生產的過程中要經曆高濕高熱的環境,所以外噴魚油更要考慮氣味及氧化穩定性。要選擇味道純正,各項指標穩定,氧化誘導期長的精製魚油為好。

    In feed production, it is necessary to maintain high humidity and high temperature. Hence, the odor and the oxidation stability of external spray fish oil should be considered. It is better to choose refined fish oil that has pure flavor, stable indicators and long oxidation induction period.

     

    13、本公司魚油相比其它品牌魚油有什麽特色? What are the uniqueness of our fish oil compared with fish oil from other brands?

    1)         原料穩定,實行全球化采購高品質的毛油,原料來源多樣化。

                     We purchase high-quality crude fish oil all over the world, which enables us to provide a variety of raw materials.

    2)         生產工藝和設備先進,可以從原料的儲存到每個生產環節做到與空氣隔絕,更好地提高成品的氧化穩定性。

                     Our advanced technology and equipment enable us to separate air from fish oil completely during processing, which significantly promote the oxidation stability of final products.

    3)         檢測設備和方法齊全穩定。能做的項目有:脂肪酸含量分析(用安捷倫氣象色譜儀)、氧化穩定性(油脂氧化穩定性測試儀)、重金屬(原子吸收和原子熒光儀)、農殘(氣質連用)、甘油酯的測定(沃特斯液相)油脂常規指標(各種常規滴定儀器)等。檢測儀器都是配備穩定和高效的。

             We have completed testing equipment and technology to evaluate the quality of fish oil. The parameters we can test include:

    Analysis of fatty acid content with Agilent meteorological chromatograph,Oxidation stability with oil oxidation stability tester,Heavy metal residue with atomic absorption and atomic fluorescence spectrometer,Pesticide residue with GC-MS,Determination of glycerides with waters liquid chromatograph,Regular specifications of grease with various conventional titration apparatus Others.The testing instruments are all stable and efficient.

    4)         生產規模較大,供貨及時,可以滿足大企業的常年訂單需求。

              We own large scale of production and provide timely supply, which can meet the demand of large companies all year around.

    5)         產品品質穩定,品種齊全,可以為特殊客戶量身定製。尤其氧化穩定性,采用特殊工藝和特效抗氧化劑,保證本公司魚油的穩定性在國內外同行業中成為佼佼者。

                    Our products are stable in quality and completed in variety. We also provide customized service for clients who has special demands.In particular, we adopt special technology to increase the oxidation stability of our products, which enables out fish oil to become the best in our industry