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1、第28卷第7期化學(xué)研究與應(yīng)用Vol.28,No.7第720期16年7月岳馥蓮,等:兩種Che兩mi性cal高Re分sea子rc絮ha凝nd劑Ap處plic理ati印on染廢水的研究July,2016文章編號(hào):1004-1656(2016)07-1001-07精煉對(duì)蘿卜籽油理化指標(biāo)及脂肪酸組成的影響*王崇均,張杰,余春陽(yáng)(重慶工商大學(xué)環(huán)境與資源學(xué)院,催化與功能有機(jī)分子重慶市重點(diǎn)實(shí)驗(yàn)室,重慶400067)摘要:采用超臨界CO萃取和正己烷提取的蘿卜籽毛油為原料,依次按照水化脫膠、堿煉脫酸、吸附脫色和真2空加熱脫臭的工序?qū)γ瓦M(jìn)行精煉
2、,并考察了各精煉階段油脂的理化指標(biāo)及脂肪酸組成變化情況。結(jié)果表明,各精煉階段對(duì)蘿卜籽油的相對(duì)密度、折光指數(shù)、碘值和皂化值沒(méi)有顯著影響,磷脂含量、酸值、過(guò)氧化值和色澤則變化顯著。蘿卜籽油脂肪酸組成與菜籽油相似,各精煉階段組成均有變化,但是變化幅度都比較小,油脂中不飽和脂肪酸含量有所降低。精煉蘿卜籽油清澈透明,酸值、過(guò)氧化值、水分及揮發(fā)物含量等指標(biāo)均達(dá)到國(guó)家二級(jí)食用油的標(biāo)準(zhǔn),其中油脂中的不飽和脂肪酸含量可達(dá)到85%,單不飽和脂肪酸含量可達(dá)到64%。關(guān)鍵詞:精煉;蘿卜籽油;脂肪酸;理化指標(biāo)中圖分類號(hào):O623文獻(xiàn)標(biāo)志碼:AEffec
3、tsoftherefiningprocessonthephysicochemicalindexandfattyacidcompositionofradishseedsoil*WANGChong-jun,ZHANGJie,YUChun-yang(ChongqingKeyLabofCatalysis&FunctionalOrganicMolecules,CollegeofEnvironmentandResources,ChongqingTechnologyandBusinessUniversity,Chongqing400067,
4、China)Abstract:TheradishseedsoilextractedbysupercriticalCOandn-hexanewererefinedbyalkalirefininganddeacidifying,degum-2ming,absorptiondecolorizationanddeodorizationinturn.Thephysicochemicalindexandfattyacidcompositionofradishseedsoilattherefiningprocesswereinvestiga
5、tedindetail.Theresultsindicatedthattherewerenosignificanteffectsontherelativedensity,refractiveindex,iodinevalueandsaponificationvalueofradishseedsoilthroughrefiningtreatment.Andthecontentofphospholip-ids,acidvalue,peroxidevalueandcolorchangeobviouslyattherefiningpr
6、ocess.Thefattyacidcompositionofradishseedsoilmeetthenationalstandardofcolleseedoilandtheunsaturatedfattyacidcontentwasdecreasedduringtherefiningprocess.Theradishseedsoilwasclearandtransparentafterrefining.Theacidvalue,peroxidevalue,waterandvolatilemattercontentswere
7、uptosec-ondgradeofnationalstandard.Theunsaturatedandmonounsaturatedfattyacidcontentofrefinedradishseedsoilweremorethan85%and64%,respectively.Keywords:refining;radishseedsoil;fattyacid;physicochemicalindex蘿卜(RaphanussativusL.),又名萊菔、土人低海拔地區(qū)。蘿卜籽,又名萊菔子,是蘿卜的成熟參,屬于十字花科蔬菜作
8、物,其主要產(chǎn)地在我國(guó)的種子,具有下氣定喘、消食化痰的功效。蘿卜籽的收稿日期:2016-03-24;修回日期:2016-05-11基金項(xiàng)目:重慶市教委科學(xué)技術(shù)研究項(xiàng)目(KJ1500622)資助;重慶工商大學(xué)校內(nèi)青年基金項(xiàng)目(1552017)資助;重慶工商大學(xué)科研啟動(dòng)經(jīng)費(fèi)項(xiàng)目(2
