Peb xyoos dhau los, archaeologists khawb lub qhov ntxa ntawm ib tug neeg tseem ceeb 40-50-xyoo-laus txiv neej los ntawm Sicán kab lis kev cai ntawm Peru, ib haiv neeg uas predated lub Incas. Tus txiv neej zaum, lub cev pob txha rov qab tau pleev xim liab liab, zoo li lub npog ntsej muag kub npog nws lub pob txha taub hau. Tam sim no, cov kws tshawb fawb qhia hauv ACS' Journal of Proteome Research tau tshuaj xyuas cov xim, pom tias, ntxiv rau cov xim liab, nws muaj tib neeg cov ntshav thiab cov qe qe proteins.
Lub Sicán yog ib qho kev coj noj coj ua tseem ceeb uas muaj los ntawm cuaj mus rau 14 centuries nyob rau sab qaum teb ntug dej hiav txwv ntawm niaj hnub Peru. Thaum Lub Sijhawm Nruab Nrab Sicán (kwv yees li 900–1,100 AD), metallurgists tau tsim cov khoom kub zoo nkauj, ntau yam uas tau faus rau hauv qhov ntxa ntawm cov neeg tseem ceeb.
Thaum ntxov xyoo 1990, ib pab neeg ntawm archaeologists thiab conservators coj los ntawm Izumi Shimada excavated lub qhov ntxa uas ib tug neeg tseem ceeb lub cev lub cev zaum tau pleev xim rau liab thiab muab tso rau pem hauv ntej ntawm lub chamber. Cov pob txha ntawm ob tug poj niam hluas tau npaj nyob ze ntawm kev yug me nyuam thiab kev yug me nyuam, thiab ob tug menyuam yaus cov pob txha pob txha tau muab tso rau ntawm qib siab dua.
Ntawm ntau cov khoom kub uas pom hauv lub qhov ntxa yog lub ntsej muag liab-xim kub, uas npog lub ntsej muag ntawm tus txiv neej lub pob txha taub hau. Thaum lub sijhawm, cov kws tshawb fawb tau txheeb xyuas cov xim liab hauv cov xim ua cinnabar, tab sis Luciana de Costa Carvalho, James McCullagh thiab cov npoj yaig xav paub seb cov neeg Sicán tau siv cov xim pleev xim li cas, uas tau khaws cov xim pleev xim rau hauv cov xim sib txawv. hlau nto ntawm daim npog qhov ncauj rau 1,000 xyoo.
Txhawm rau kom paub, cov kws tshawb fawb tau tshuaj xyuas ib qho piv txwv me me ntawm daim npog ntsej muag xim liab. Fourier transform-infrared spectroscopy qhia tau hais tias cov qauv muaj cov proteins, yog li pab neeg no tau soj ntsuam proteomic siv tandem loj spectrometry. Lawv tau txheeb xyuas txog rau cov proteins los ntawm tib neeg cov ntshav hauv cov xim liab, suav nrog cov ntshav albumin thiab immunoglobulin G (ib hom tib neeg cov tshuaj tiv thaiv kab mob). Lwm cov proteins, xws li ovalbumin, tuaj ntawm qe dawb. Vim hais tias cov proteins tau degraded heev, cov kws tshawb fawb tsis tuaj yeem txheeb xyuas cov hom noog lub qe siv los ua cov xim, tab sis cov neeg sib tw yuav yog Muscovy os.
Kev txheeb xyuas ntawm tib neeg cov ntshav proteins txhawb qhov kev xav tias qhov kev npaj ntawm cov pob txha pob txha muaj feem xyuam rau qhov xav tau "rov ua dua tshiab" ntawm tus thawj coj Sicán tus neeg tuag, nrog cov xim muaj ntshav uas coated tus txiv neej lub cev pob txha thiab lub ntsej muag lub ntsej muag muaj peev xwm ua cim nws "lub zog lub neej, "cov kws tshawb fawb hais.
Tsab ntawv thawj zaug luam tawm rau American Tshuaj Society. Nyeem qhov thawj tsab xov xwm.
