Improved Indophenol Titration Method for Ascorbic Acid Using a Dropper and Electronic Balance : Enhanced Convenience and Efficiency
The analysis of ascorbic acid using the 2,6-dichloroindophenol (DCIP) titration method is a well-established technique, but requires the skilled handling of a burette for accurate measurements. In the present study, we propose a modified DCIP titrimetric method that replaces the burette with a dropper and employs an electronic balance to measure the titrated amount by weight. The dropper used can be flexibly selected, allowing for a wide range of drop sizes, from large to very small. This modification offers several advantages, including lower skill requirements, a 43% reduction in the analysis time, a 50% decrease in sample/reagent consumption, and the ability to prepare DCIP standard solutions tailored to the concentration of ascorbic acid in the sample being analyzed. Our analysis of several food samples using this improved method showed that inherent issues of the DCIP method, such as determining the titration end point, could not be resolved. Nevertheless, the improved titration method remains more convenient and adaptable than the original approach using a burette, enabling quick and accurate analysis, especially for unskilled analysts.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:65 |
|---|---|
| Enthalten in: |
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan - 65(2024), 1 vom: 28., Seite 1-6 |
| Sprache: |
Japanisch |
|---|
| Beteiligte Personen: |
Umegaki, Keizo [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
2,6-dichloroindophenol |
|---|
| Anmerkungen: |
Date Completed 05.03.2024 Date Revised 05.03.2024 published: Print Citation Status MEDLINE |
|---|
| doi: |
10.3358/shokueishi.65.1 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM369227654 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM369227654 | ||
| 003 | DE-627 | ||
| 005 | 20240305232557.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240304s2024 xx |||||o 00| ||jpn c | ||
| 024 | 7 | |a 10.3358/shokueishi.65.1 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1317.xml |
| 035 | |a (DE-627)NLM369227654 | ||
| 035 | |a (NLM)38432896 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a jpn | ||
| 100 | 1 | |a Umegaki, Keizo |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Improved Indophenol Titration Method for Ascorbic Acid Using a Dropper and Electronic Balance |b Enhanced Convenience and Efficiency |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 05.03.2024 | ||
| 500 | |a Date Revised 05.03.2024 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The analysis of ascorbic acid using the 2,6-dichloroindophenol (DCIP) titration method is a well-established technique, but requires the skilled handling of a burette for accurate measurements. In the present study, we propose a modified DCIP titrimetric method that replaces the burette with a dropper and employs an electronic balance to measure the titrated amount by weight. The dropper used can be flexibly selected, allowing for a wide range of drop sizes, from large to very small. This modification offers several advantages, including lower skill requirements, a 43% reduction in the analysis time, a 50% decrease in sample/reagent consumption, and the ability to prepare DCIP standard solutions tailored to the concentration of ascorbic acid in the sample being analyzed. Our analysis of several food samples using this improved method showed that inherent issues of the DCIP method, such as determining the titration end point, could not be resolved. Nevertheless, the improved titration method remains more convenient and adaptable than the original approach using a burette, enabling quick and accurate analysis, especially for unskilled analysts | ||
| 650 | 4 | |a English Abstract | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a 2,6-dichloroindophenol | |
| 650 | 4 | |a ascorbic acid | |
| 650 | 4 | |a burette | |
| 650 | 4 | |a food analysis | |
| 650 | 4 | |a titration method | |
| 650 | 7 | |a Ascorbic Acid |2 NLM | |
| 650 | 7 | |a PQ6CK8PD0R |2 NLM | |
| 650 | 7 | |a Indophenol |2 NLM | |
| 650 | 7 | |a 500-85-6 |2 NLM | |
| 700 | 1 | |a Ito, Mika |e verfasserin |4 aut | |
| 700 | 1 | |a Yokotani, Kaori |e verfasserin |4 aut | |
| 700 | 1 | |a Yamada, Shizuo |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan |d 2001 |g 65(2024), 1 vom: 28., Seite 1-6 |w (DE-627)NLM112882587 |x 0015-6426 |7 nnns |
| 773 | 1 | 8 | |g volume:65 |g year:2024 |g number:1 |g day:28 |g pages:1-6 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.3358/shokueishi.65.1 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 65 |j 2024 |e 1 |b 28 |h 1-6 | ||