Pregled bibliografske jedinice broj: 1226274
Study of dry fruit as acid-base indicator
Study of dry fruit as acid-base indicator // Zbornik sažetaka 11. Simpozija s međunarodnim sudjelovanjem Kopački rit - Jučer, danas, sutra 2022.
Osijek, Hrvatska, 2022. str. 64-64 (poster, nije recenziran, sažetak, znanstveni)
CROSBI ID: 1226274 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Study of dry fruit as acid-base indicator
Autori
Glavaš, Dora ; Amić, Ana
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Zbornik sažetaka 11. Simpozija s međunarodnim sudjelovanjem Kopački rit - Jučer, danas, sutra 2022.
/ - , 2022, 64-64
Skup
11. simpozij s međunarodnim sudjelovanjem: Kopački rit - jučer, danas, sutra = 11h Symposium with International Participation: Kopački rit - past, present, future
Mjesto i datum
Osijek, Hrvatska, 29.09.2022. - 30.09.2022
Vrsta sudjelovanja
Poster
Vrsta recenzije
Nije recenziran
Ključne riječi
fruit ; acid-base indicators ; solvents
Sažetak
In this work, the potential of dry stone fruit as acid-base indicator was studied. The term “stone fruit” refers to fruit that contains a hard pit in the middle. Some examples of stone fruit are plum, peach, sour and sweet cherry, etc. Most of this fruit contain pigments that change colour depending on the pH, which is why they may be applicable as natural acid-base indicators. Hence, the aim of this study was to determine whether dry stone fruit can be used for preparation of indicators. For this purpose, dry sour and sweet cherries, plums, peach, apricots, nectarines, cherry plums, Japanese cherries and Cornelian cherries were used. Indicators were prepared with acetone, ethanol or methanol. In preliminary study, using sour cherries, we determined optimal ratio of fruit mass and solvent volume, in order to determine the ration that gives the clearest and most pronounced colour changes. Next, sour cherry sample was mixed with 25, 50 and 75 % acetone, ethanol and methanol. The solutions were left for 24 h at room temperatures. After 24 h, the experiment to determine colour change of here prepared indicators in contact with solutions of pH = 1-14 was conducted. Based on parameters obtained in preliminary study, further experiments were conducted. Obtained results show that dry stone fruit, mainly plums and cherries, can be used as a natural acid-base indicator.
Izvorni jezik
Hrvatski, engleski
Znanstvena područja
Kemija
