Historia doctrinae de affinitatibus chemicis

Dedicatio: Johan Magn. Brummer [ruots. pr.], Hel. Sophia Brummer s. Ehrenmalm [ruots. pr.].

Historia doctrinae de affinitatibus chemicis

Painovuosi nimekkeestä.

Historia doctrinae de affinitatibus chemicis

Dedicatio: ERicus Joh. Pomoell.

Historia doctrinae de affinitatibus chemicis

Arkit: 1 arkintunnukseton lehti, G-H4.

Praecipuae caussae defectuum, quibus laborat historia Fennica

Invocatio: I.N.J.C.

Historia ecclesiae reformatae in Suethia

Invocatio Q.B.C.

Historia Regiae Academiae Aboensis

Invocatio: I.N.J.C.

Björneborgs läns mineral-historia

Invocatio: M.G.H.

Extracción de compuestos con actividad antioxidante de frutos de guayaba cultivada en Vélez-Santander, Colombia

The effects of the extraction system (50% methanol or 50% methanol pH 2.0), volume/material ratio, temperature, time and extractions with 70% acetone were evaluated in the total phenolic compounds (TPC) extraction and in antioxidant activities (AA) using FRAP and ABTS assays in guava fruit. The best yield was obtained when 0.5 g of guava were extracted first with 20 mL 50% methanol and then four times with 20 mL 70% acetone during 30 min at 50 °C. Among the different trials guava fruit exhibited high levels of AA as well as TPC.

Historia Regiae Academiae Aboensis

Invocatio: I.N.J.C.