▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁Ut ah ▁Category : Pro te cted ▁areas ▁of ▁Gar field ▁County , ▁Ut ah ▁Category : Pro te cted ▁areas ▁of ▁K ane ▁County , ▁Ut ah ▁Category : National ▁Register ▁of ▁Historic ▁Places ▁in ▁Bry ce ▁C any on ▁National ▁Park ▁Category : H ik ing ▁tra ils ▁in ▁Ut ah ▁Category : C ivil ian ▁Conserv ation ▁Corps ▁in ▁Ut ah ▁Category : National ▁Register ▁of ▁Historic ▁Places ▁in ▁Gar field ▁County , ▁Ut ah <0x0A> </s> ▁V acc en ic ▁acid ▁is ▁a ▁naturally ▁occurr ing ▁trans ▁fat ty ▁acid . ▁It ▁is ▁the ▁pre domin ant ▁kind ▁of ▁trans - f at ty ▁acid ▁found ▁in ▁human ▁milk , ▁in ▁the ▁fat ▁of ▁r umin ants , ▁and ▁in ▁da iry ▁products ▁such ▁as ▁milk , ▁but ter , ▁and ▁y og urt . ▁Trans ▁fat ▁in ▁human ▁milk ▁may ▁depend ▁on ▁trans ▁fat ▁content ▁in ▁food . ▁▁ ▁Its ▁I UP AC ▁name ▁is ▁( 1 1 E )- 1 1 - oct ade c eno ic ▁acid , ▁and ▁its ▁li pid ▁sh orth and ▁name ▁is ▁ 1 8 : 1 ▁trans - 1 1 . ▁ ▁The ▁name ▁was ▁derived ▁from ▁the ▁Latin ▁vac ca ▁( cow ). ▁ ▁V acc en ic ▁acid ▁was ▁discovered ▁in ▁ 1 9 2 8 ▁in ▁animal ▁f ats ▁and ▁but ter . ▁▁ ▁M amm als ▁convert ▁it ▁into ▁r umen ic ▁acid , ▁a ▁conjug ated ▁lin ole ic