Sterol telah dimanfaatkan sebagai sUmber hormonSL.eroid dalam rangka produksi 1:1-ontraseptif -oral. Untukmencari sterol tersebut, dinilai kemungkinan untukmemanf-'aatkan limblah udang windu ( -f^_E^f_Li5_74 monodon)sebagai sumber kolesterol,yang me rupakan komponen utamasterol dalam krustasea.Penetapan kadar sterol total dilakukan melaluimodifikasi cara sPektrofotometri berdasarkan reaksi.Liebermarin-Burchard, dan kadar kolesterol ditetapkansecaraa kromatografi gas- c-air. Kemudian dilakukanpenilaian hasil peneraparl cara penetaparl kadar sterol.menurut kedua cara tersebut. Dalam penyiapan bahandilakukan hidrolisis dengan KOH-etariol pada berbagaitemperatur dan lamanya pemanasan yaitu 90 OC/60 menit90 'C/ 1.0 menit dan ' 40 O C/55 menit. Sed'angkan tahappenyarian menggunakan pelarut eter dengan penyarian tigakali dan wasbensin dengan penyarian sekali.Hasil pengujian statistik dengan menggunakananalisis variansi menunjukd^.an perbedaan tak bermaknaantara faktor hidrolisis, cara penyarian dan metodepenetapan kadar.Kadar sterol total udang windu adalah 2 .,22 + 0,07)mg./g bahan berdasarkan reaksi Liebermann-Burchard dan2,19 4 0,0,Tmg/9 baban secara kromatografi gas-cair.

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Sterols have been used as source of steroid

hormones to produce oral-contraceptives. In searching

for sterols, it is evaluated possibility to use waste of

^ian4 tiger shrimp ("f-e-n-a-e-u-s- -m-o-n-o-d-o-n-) as source of cholesterol

which is the major sterol component-in Crustacea.

Determination of total sterols was done by the

modified spectrophotometric method based on tll^_

Liebermann-Burchard and the cholesterol level was

determined by gas-liquid chromatography (GLC). The

result of the two determinations were evaluated. To

prepare the sample, hydrolisis with KOH-ethanol at

different temperatures and times of heating were done.

The conditions were 90 OC/60 minutes, 90'C/10 minutes and

40"C/55 minutes.. Ether and petroleum benzene were used

as solvents for extraction. Extraction was done with

three portions of ether and one portion of petroleum

benzene.

Analysis of variance snowed no significant

differences between the different methods of hydrolisis,

extraction and determinations..

'l con

t

The total stero ent of giant ti ger shrimp

was 2,22 + 0,071 mg/9 samples determined by Liebermann-

Burchard reaction . and 21,^_',' + 0.,07,' mg/9 determined

samples by GLC.