牦牛肝脏中脂肪含量与食用品质、脂肪酸组成的相关性.pdf

《牦牛肝脏中脂肪含量与食用品质、脂肪酸组成的相关性.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、1642014,Vo1．35,No．06食品科学※分析检测牦牛肝脏中脂肪含量与食用品质、脂肪酸组成的相关性王永祥，张玉斌，韩玲，余群力术，保善科(1．甘肃农业大学食品科学与工程学院，甘肃兰州730070；2．青海省海北州畜牧兽医科学研究所，青海海北810200)摘要：研究牦牛肝脏中脂肪含量与食用品质及脂肪酸组成之间的关系。以海北牦牛为研究对象、当地同龄黄牛为对照，采用内标法对肝脏的脂肪酸组成进行测定并对脂肪含量与食用品质、脂肪酸组成进行相关性分析。结果显示：牦牛肝脏色度日值极显著高于对照组(P<0．01)，失水率极显著低于对照组(P<0．O1)；饱和脂肪酸含量极显著低于对

2、照组(JP<0．01)：两者的功能性脂肪酸有极显著差异(P

3、tingQualityandFattyAcidCompositionWANGYong．xiang，ZHANGYu—bin，HANLing，YUQun—li，，BAOShan．ke(1．CollegeofFoodScienceandEngineering，GansuAgriculturalUniversity，Lanzhou730070，China；2．AnimalHusbandryandVeterinaryInstituteofHaibeiStateinQinghaiProvince，Haibei810200，China)Abstract：Inthepresentstud

4、y，thecorrelationsofliverfatcontentwitheatingqualityandfattyacidcompositionofHaibeiyakwereinvestigated．Fattyacidcompositionwasdeterminedbyaninternalstandardmethod．Liversofyellowcattlewereusedascontro1．Theresultsshowedthatyakliverexhibitedasignificantincreaseinavalueandasignificantdecreasei

5、nwaterlossratecomparedwiththecontrolgroup<0．01)．Thecontentofsaturatedfattyacidscontentinyakliverwassignificantlylowerthaninthecontrolgroup(尸<0．01)，andtherewasaverysignificantdifferenceinthecontentoffunctionalfattyacidsbetweenthetwogroups(P

6、(尸／．5)ofyakliverwasO．51．whichwasinlinewiththevaluerecommendedbytheWorldHealthOrganization．greaterthan0．4．The一6／n一3ratiowaslessthantherecommendedvalue．Correlationanalysisdemonstratedthatliverfatcontentandwaterlossratewerepositivelycorrelatedwitheachother<0．01)．Liverfatcontentshowedasignifi

7、cantlypositivecorelationwithsaturatedfattyacid，monounsaturatedfattyacid，stearicacid，eicosapntemacniocacidanddocosahexaenoicacidcontents<0．05)，andasignificantlynegativecorrelationwiththecontentofpolyunsaturatedfattyacid<0．O1)．Inconclusion，yakliverhasexcellenteatingqu