This paper reports on the investigation of experimental conditions relevant for spontaneous precipitation of significant amount of pure calcium oxalate dihydrate (COD). For this purpose, the hydrodynamic and thermodynamic parameters, such as mode of agitation, temperature, supersaturation and concentration of additives (citrate ions), have been studied. The results show that in the model systems, without the citrate addition and applied mechanical stirring, calcium oxalate monohydrate (COM) was observed as dominant modification after 20 min of aging, while the magnetic stirring resulted in a formation of a mixture of COM and calcium oxalate trihydrate (COT), regardless of the temperature applied. In the mechanically stirred systems, the addition of citrate ions in the range of concentrations, 0.001 mol dm < c (NaCHO) < 0.012 mol dm, caused the formation of COM and COD mixture at all temperatures. At the same conditions and in the magnetically stirred systems formation of COD, in a mixture with COT or COM, has been observed. The highest COD content in the mechanically stirred system was obtained at 45 °C and c (NaCHO) = 0.001 mol dm (w = 89.5%), while in the magnetically stirred system almost pure COD was obtained at 37 °C and c (NaCHO) = 0.008 mol dm (w = 96.5%).

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Za pet slastičarskih proizvoda na bazi prhkog, lisnatog, dizanog, kuhano-pečenog i biskvitnog tijesta u ponudi hotelske kuće na području Šibensko-kninske županije prikupljeni su podaci za izračun ukupne energetske vrijednosti proizvoda na 100 grama proizvoda i na jedinicu konzumacije proizvoda, te količine hranjivih tvari na 100 grama proizvoda i na jedinicu konzumacije proizvoda, metodom tzv. "izračuna receptom". Prema rezultatima, slastičarski proizvodi mogu već po jedinici konzumacije proizvoda zadovoljiti čak 25 % dnevnih potreba odrasle osobe za energijom, do 63 % preporučenog dnevnog unosa zasićenih masnih kiselina za odraslu osobu, do 52 % preporučenog dnevnog unosa šećera za odraslu osobu, te do 13 % preporučenog dnevnog unosa soli za odraslu osobu, no na udio pojedinih hranjivih tvari u proizvodu može se utjecati promjenom sirovinskog sastava proizvoda. S obzirom na ograničenja izračuna receptom, preporuča se za navedene proizvode odrediti sadržaj hranjivih tvari laboratorijskom analizom, te usporediti vrijednosti.