sizing of paperboard has a distinctive position in packaging grade paperboard material. optimization of sizing by alum-rosin at neutral ph in 4 layered paperboard (330 g/m2) wereevaluated in this study to find the optimum ratio of alum- rosin loading in the process. fixed amount of 1% cationic dispersed rosin together with alum as a fixing agent at 5 different levels of 1, 1.5, 2, 3, and 4% (ba...

Quaternary amine of diethylaminoethyl rosin ester (QRMAE), chemically synthesized biocompatible rosin based cationic surfactant, has various biological applications including its use as a food product additive. In this study, we examined the amorphous aggregation behavior of mammalian serum albumins at pH 7.5, i.e., two units above their isoelectric points (pI ~5.5), and the roles played by pos...

In the present study, a new magnetic powder based on magnetite can be used as a petroleum crude oil collector. Amidoximes based on rosin as a natural product can be prepared from a reaction between hydroxylamine and rosin/acrylonitrile adducts. The produced rosin amidoximes were used as capping agents for magnetite nanoparticles to prepare hydrophobic coated magnetic powders. A new class of mon...

Rosin was once widely used for removal of duck feathers in China and is still being used secretly in some poultry processing enterprises. Abietic acid (AA) and dehydroabietic acid (DHAA) are the major compounds of rosin. In the present study, 90 duck samples were collected for investigation of AA and DHAA residues. Abietic acid and DHAA were simultaneously detected in 13 out 40 raw ducks, 8 out...

THE TITLE COMPOUND [SYSTEMATIC NAME: (1R,4aS,10aR)-7-iso-prop-yl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octa-hydro-phen-anthrene-1-carboxylic acid], C(20)H(28)O(2), has been isolated from disproportionated rosin which is obtained by isomerizing gum rosin with a Pd-C catalyst.. Two crystallographically independent mol-ecules exist in the asymmetric unit. In each mol-ecule, there are three six-membere...

Gondorukem adalah hasil olahan destilasi uap getah sadapan batang pinus sebagai bahan baku utama untuk pembuatan rosin (non-kristal). Rosin resin yang diekstrak dari pohon pinus, berwarna kuning pucat hingga tua. Pemakaian banyak digunakan di berbagai industri diantaranya, tinta cetak, cat, ban, dan kertas, saat ini Indonesia masih mendatangkan negara lain, maka itu pengelolaan serta pemanfaata...