简介:MarinesedimentsampleswerecollectedfromthecoastalareasofSouthernIndia,particularlyinKanyakumariDistrict.Twenty-eightdifferentfungalstrainswereisolated.Thescreeningoffungifrommarinesedimentwasdonetoisolateapotentfungusthatcanproducebioactivecompoundsforbiomedicalapplications.OnlythreestrainsvizTrichodermagamsiiSP4,TalaromycesflavusSP5andAspergillusoryzaeSP6werescreenedforfurtherstudies.Theintracellularbioactivecompoundswereextractedusingsolventextractionmethod.Thecrudeextractsweretestedforitsanti-microbialandanti-cancerpropertiesandanalyticallycharacterizedusingGasChromatographyMassSpectrometry(GC-MS).Allthethreeextractswereactive,buttheextractfromT.flavusSP5wasfoundtobemoreactiveagainstvarioushumanpathogens,viz.,PseudomonasaeruginosaATCC27853(17.8±0.1),EscherichiacoliATCC52922(18.3±0.3),andCandidatropicalisATCC750(17.7±0.4).ItalsoexhibitedcytotoxicactivityagainstHEp2carcinomacelllinewiththeLC_(50)valueof25.7μg·mL~(-1).TheGC-MSdatarevealedthepresenceofeffectivebioactivecompounds.TheseresultsrevealedthattheextractfromisolatedfungusT.flavusSP5actedasapotentantimicrobial,antifungal,andanticanceragent,providingbasicinformationonthepotencyofmarinefungitowardsbiomedicalapplications;furtherinvestigationmayleadtothedevelopmentofnovelanticancerdrugs.
简介:目的:测定左归饮中马钱苷和5-羟甲基糠醛2种化学成分的含量。方法:采用高相液相色谱法,以C18柱为色谱柱,流动相为乙腈-水,梯度洗脱;流速为1.0mL·min-1;柱温为30℃;检测波长为250nm。结果:左归饮中的马钱苷和5-羟甲基糠醛分别在0.51~4.08μg(r=0.9998)、0.26—2.04μg(r=0.9998)与峰面积呈良好线性关系,平均加样回收率分别为101.24%(RSD=1.40%)和99.72%(RSD=1.10%)。结论:该法准确可靠、重复性好,可作为同时测定左归饮中马钱苷和5一羟甲基糠醛含量的测定方法。