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植物油脂的納米乳液制備考核試卷考生姓名:__________答題日期:__________得分:__________判卷人:__________

一、單項選擇題(本題共20小題,每小題1分,共20分,在每小題給出的四個選項中,只有一項是符合題目要求的)

1.以下哪種方法不是制備植物油脂納米乳液常用的穩(wěn)定化技術?()

A.硅膠

B.膠體穩(wěn)定劑

C.磷脂

D.表面活性劑

2.植物油脂納米乳液屬于下列哪種分散系統(tǒng)?()

A.真溶液

B.膠體溶液

C.乳液

D.懸浮液

3.以下哪種表面活性劑最適用于O/W型植物油脂納米乳液的制備?()

A.硬脂酸

B.十二烷基硫酸鈉

C.石蠟

D.硅油

4.在植物油脂納米乳液制備中,以下哪個過程是乳化?()

A.油水混合

B.油脂細化

C.油脂均質(zhì)化

D.油脂分離

5.下列哪種粒度范圍描述的是納米乳液?()

A.<100nm

B.100-1000nm

C.1-1000μm

D.>1000μm

6.以下哪種設備常用于植物油脂納米乳液的制備?()

A.高壓均質(zhì)機

B.真空干燥箱

C.磁力攪拌器

D.濾紙

7.植物油脂納米乳液的穩(wěn)定性與以下哪個因素無關?()

A.表面活性劑種類

B.乳化條件

C.環(huán)境溫度

D.油脂飽和度

8.制備植物油脂納米乳液時,常用的助表面活性劑是以下哪個?()

A.丙酮

B.乙醇

C.水

D.鹽

9.在納米乳液制備過程中,Zeta電位一般用來評價什么?()

A.乳液的粘度

B.乳液的穩(wěn)定性

C.乳液的顏色

D.乳液的折射率

10.以下哪個條件不是制備植物油脂納米乳液的理想條件?()

A.溫度控制

B.高速攪拌

C.低剪切力

D.適宜的pH值

11.以下哪種植物油最適宜制備納米乳液?()

A.棕櫚油

B.橄欖油

C.花生油

D.芥花油

12.納米乳液的制備中,若要提高穩(wěn)定性,以下哪種做法是正確的?()

A.降低表面活性劑濃度

B.減少乳化時間

C.增加油脂濃度

D.增加助表面活性劑

13.在植物油脂納米乳液制備中,以下哪種現(xiàn)象屬于乳化失???()

A.分層

B.透明

C.均一

D.穩(wěn)定

14.制備植物油脂納米乳液時,哪種方法可以用來確定乳液類型?()

A.粒度分析

B.電導率測定

C.色譜分析

D.折射率測定

15.以下哪種性質(zhì)不是植物油脂納米乳液的特點?()

A.高穩(wěn)定性

B.高粘度

C.透明度高

D.粒度均一

16.在納米乳液制備中,以下哪種現(xiàn)象可能是由于過度剪切造成的?()

A.乳液變稀

B.乳液變稠

C.乳液分層

D.乳液顏色改變

17.下列哪種添加劑可用于提高植物油脂納米乳液的抗氧化性?()

A.維生素C

B.氧化鐵

C.硼砂

D.硫磺

18.制備植物油脂納米乳液時,以下哪個步驟是均質(zhì)化過程?()

A.油水混合

B.加熱

C.加入表面活性劑

D.高壓均質(zhì)處理

19.在植物油脂納米乳液制備中,以下哪種方法不適用于粒徑的測量?()

A.動態(tài)光散射

B.透射電子顯微鏡

C.激光散射

D.紫外可見光譜

20.以下哪個因素對植物油脂納米乳液的物理穩(wěn)定性影響最大?()

A.乳化劑種類

B.乳化條件

C.存儲溫度

D.油脂種類

(以下為答題紙):

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二、多選題(本題共20小題,每小題1.5分,共30分,在每小題給出的四個選項中,至少有一項是符合題目要求的)

1.以下哪些因素會影響植物油脂納米乳液的穩(wěn)定性?()

A.表面活性劑的選擇

B.乳化設備的類型

C.乳液存儲的溫度

D.油脂的酸值

2.以下哪些方法可以用來制備植物油脂納米乳液?()

A.高壓均質(zhì)法

B.超聲波法

C.熱力學法

D.冷卻法

3.植物油脂納米乳液制備中,哪些因素會影響乳液的粒徑大???()

A.乳化劑的濃度

B.均質(zhì)化壓力

C.油脂的粘度

D.乳液的pH值

4.以下哪些是納米乳液的特點?()

A.粒徑小

B.穩(wěn)定性好

C.黏度高

D.透明度低

5.以下哪些助表面活性劑常用于植物油脂納米乳液的制備?()

A.丙三醇

B.糖醇

C.礦物油

D.聚乙二醇

6.制備植物油脂納米乳液時,以下哪些條件需要控制?()

A.溫度

B.pH值

C.剪切速率

D.攪拌時間

7.以下哪些設備可以用于植物油脂納米乳液的粒徑分析?()

A.動態(tài)光散射儀

B.透射電子顯微鏡

C.激光散射儀

D.流式細胞儀

8.以下哪些方法可以用來評估植物油脂納米乳液的穩(wěn)定性?()

A.粒徑分析

B.Zeta電位測量

C.離心測試

D.色譜分析

9.以下哪些植物油脂適合制備納米乳液?()

A.橄欖油

B.花生油

C.玉米油

D.芥花油

10.在植物油脂納米乳液制備過程中,以下哪些做法可能導致乳化失敗?()

A.表面活性劑使用過量

B.均質(zhì)化壓力不足

C.油脂未預熱

D.攪拌速度過快

11.以下哪些因素會影響植物油脂納米乳液的氧化穩(wěn)定性?()

A.抗氧化劑的添加

B.乳液的粒徑大小

C.存儲環(huán)境中的氧氣濃度

D.油脂的不飽和度

12.以下哪些是制備植物油脂納米乳液時常用的表面活性劑?()

A.非離子表面活性劑

B.陽離子表面活性劑

C.陰離子表面活性劑

D.兩性離子表面活性劑

13.以下哪些添加劑可以用于改善植物油脂納米乳液的感官特性?()

A.香料

B.甜味劑

C.防腐劑

D.著色劑

14.在植物油脂納米乳液的制備中,以下哪些條件有助于提高產(chǎn)品的均一性?()

A.逐步增加表面活性劑

B.預熱油脂

C.適當增加攪拌速度

D.控制均質(zhì)化壓力

15.以下哪些因素會影響植物油脂納米乳液的乳化效率?()

A.表面活性劑的HLB值

B.油脂的極性

C.乳液制備的設備

D.環(huán)境濕度

16.以下哪些方法可以用來改善植物油脂納米乳液的物理穩(wěn)定性?()

A.調(diào)整表面活性劑的比例

B.添加高分子量聚合物

C.增加油脂濃度

D.控制乳液的pH值

17.在植物油脂納米乳液制備中,以下哪些做法有助于減少產(chǎn)品中的氣泡?()

A.使用脫氣油脂

B.降低攪拌速度

C.在真空條件下操作

D.使用防泡沫劑

18.以下哪些因素會影響植物油脂納米乳液的生物可接受性?()

A.表面活性劑的生物降解性

B.油脂的氧化狀態(tài)

C.乳液中的防腐劑

D.納米乳液的粒徑

19.以下哪些是植物油脂納米乳液在食品工業(yè)中的應用?()

A.食品添加劑

B.食品乳化劑

C.食品色素分散介質(zhì)

D.營養(yǎng)補充劑的載體

20.在植物油脂納米乳液制備中,以下哪些條件有助于提高產(chǎn)品的氧化穩(wěn)定性?()

A.使用抗氧化表面活性劑

B.控制乳液制備過程中的氧氣接觸

C.選用飽和度高油脂

D.降低乳液的存儲溫度

(以下為答題紙):

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三、填空題(本題共10小題,每小題2分,共20分,請將正確答案填到題目空白處)

1.在植物油脂納米乳液制備中,表面活性劑的HLB值一般應控制在_______范圍內(nèi)。

2.植物油脂納米乳液的穩(wěn)定性主要受到_______和_______兩個因素的影響。

3.制備納米乳液時,常用的均質(zhì)化設備是_______。

4.納米乳液的粒徑通常在_______范圍內(nèi)。

5.為了提高植物油脂納米乳液的氧化穩(wěn)定性,可以添加_______。

6.乳液的類型可以通過測定其_______來確定。

7.在納米乳液制備過程中,若出現(xiàn)分層現(xiàn)象,說明乳化_______。

8.植物油脂納米乳液的透明度主要取決于_______。

9.乳液制備中,常用的助表面活性劑有_______和_______。

10.納米乳液在食品工業(yè)中的應用包括作為_______和_______。

四、判斷題(本題共10小題,每題1分,共10分,正確的請在答題括號中畫√,錯誤的畫×)

1.植物油脂納米乳液的制備過程中,均質(zhì)化壓力越高,乳液粒徑越小。()

2.在納米乳液制備中,表面活性劑的濃度越高,乳液越穩(wěn)定。()

3.納米乳液的穩(wěn)定性與乳液的粘度成正比。()

4.乳液制備時,所有類型的表面活性劑都可以用于乳化植物油脂。()

5.制備納米乳液時,油脂的預熱可以提高乳化效率。()

6.納米乳液的存儲溫度對其穩(wěn)定性沒有影響。()

7.在植物油脂納米乳液制備中,非離子表面活性劑比離子表面活性劑更適合。()

8.乳液的粒徑越小,其生物可接受性越低。()

9.植物油脂納米乳液可以用于提高食品的營養(yǎng)吸收率。()

10.乳液制備過程中,氧化鐵是一種常用的抗氧化添加劑。()

(以下為答題紙):

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