乳清多肽微膠囊化

生物工程論文編號(hào):SW006  論文字?jǐn)?shù):10340,頁數(shù):22

目錄 
中文摘要 I
英文摘要 II
目錄 III
1. 緒論 1
 1.1  研究乳清多肽的意義 1
 1.2  有關(guān)微膠囊技術(shù) 1
 1.3 噴霧干燥微膠囊化的原理 4
1.4 微膠囊技術(shù)在工業(yè)中應(yīng)用的特點(diǎn) 5
1.5 微膠囊技術(shù)的國內(nèi)外研究進(jìn)展 5
 1.6 課題研究目的及意義 6
1.7 本章小結(jié) 6
2. 實(shí)驗(yàn)部分 7
 2.1 儀器與材料 7
 2.2 實(shí)驗(yàn)方法 7
     2.3 本章小結(jié) 10
3. 結(jié)果與討論 11
3.1微膠囊感官評定---氣味、色澤、狀態(tài) 11
 3.2包埋劑的單因素實(shí)驗(yàn)的分析 11
 3.3混合型包埋劑對苦味掩蓋效果的分析    12
 3.4壁材選擇及其組成對微膠囊化工藝的影響 13
3.5微膠囊產(chǎn)品保留率的測定 13
3.6噴霧干燥的相關(guān)參數(shù) 13
     3.7 本章小結(jié) 14
4.結(jié)論與展望 15
致謝 16
參考文獻(xiàn) 17

摘要：本實(shí)驗(yàn)采用噴霧干燥法對乳清多肽進(jìn)行微膠囊化包埋以達(dá)到消除苦味的目的。結(jié)果表明壁材的選擇以及不同的芯壁材比例對苦味的掩蓋效果有很大差異。其中親水性壁材β-環(huán)糊精以及對疏水性壁材乙基纖維素的包埋效果相對較好，但疏水性壁材的效果遠(yuǎn)遠(yuǎn)沒有親水性的好。混合型壁材以親疏結(jié)合的單甘酯和β-環(huán)糊精組合掩蓋效果最理想且產(chǎn)品包埋率高。隨著β-環(huán)糊精比例的增加，效果也越顯著。此外，噴霧干燥的工藝參數(shù)也會(huì)影響微膠囊的產(chǎn)量和質(zhì)量。本次實(shí)驗(yàn)中的噴霧干燥進(jìn)風(fēng)溫度為200℃，出風(fēng)溫度為100℃ ~105℃，進(jìn)料速度為50mL/min，進(jìn)料霧化壓力為0.18 MPa。包埋率最高可達(dá)73.45%，隨著天數(shù)的增加產(chǎn)品的保留率逐漸變小，保留率的變化趨勢平和沒有大的波動(dòng)。
The micro encapsulation of whey poly-peptides

Abstract: the present study was carried out to cover the bitter taste of whey poly-peptides by encapsulating using spray-drying technology. The covering efficiency was affected by wall material and the proportion between whey poly-peptides and wall material. Our results showed that the hydrophilicβ-cyclodextrin and the hydrophobic ethyl-cellulose had a comparatively good efficiency, although β-cyclodextrin was much better than ethyl-cellulose. The combination ofβ-cyclodextrin and glycerin monostearate was the best mixed wall material with high efficiency and productivity. Furthermore, spray drying craft condition was the main factor that affected the micro encapsulation efficiency. The spray drying craft condition in our experimental was: temperature of entering wind at 150℃, enter speed is 50ml/min, spray pressure as 0.18 MPa, the accepting rate of the products is about 73.5%.
關(guān)鍵詞：乳清多肽  親水性壁材 疏水性壁材  噴霧干燥  微膠囊
Key words: whey poly-peptides; hydrophilic; hydrophobic; spray drying;
Micro encapsulation