The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method
A fatty acid value determination method in grain was developed by using automatic photometric titrator with KOH as standard titration solution in this paper, in which magnetic stirring apparatus was selected as extraction device, anhydrous ethanol was used as extraction solvent, and thymol blue was...
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| Format: | Article |
| Language: | English |
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Academy of National Food and Strategic Reserves Administration
2020-09-01
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| Series: | Liang you shipin ke-ji |
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| Online Access: | http://lyspkj.ijournal.cn/lyspkj/article/abstract/20200534?st=article_issue |
| _version_ | 1827930190795243520 |
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| author | LI Wei-xiang ZHANG Ji-guang WU Wan-fu LV Shi-dong |
| author_facet | LI Wei-xiang ZHANG Ji-guang WU Wan-fu LV Shi-dong |
| author_sort | LI Wei-xiang |
| collection | DOAJ |
| description | A fatty acid value determination method in grain was developed by using automatic photometric titrator with KOH as standard titration solution in this paper, in which magnetic stirring apparatus was selected as extraction device, anhydrous ethanol was used as extraction solvent, and thymol blue was used to control directing terminal. Finally, the fatty acid value was calculated by combining the consumed volume of KOH's standard titration solution. The instrument can automatically complete the whole process of extraction, filtration,quantitative transfer, titration and calculation. The results showed that the determination method has high precision, and the repeatability, accuracy and stability can meet the requirements of the national standard method, the consistency between instruments can meet the repeatability requirement of national standard method, the measuring time of paddy and wheat flour were one-third and one-half respectively of those by potentiometric or manual titration, and the measuring time of maize was two-fifths of the potentiometric titration and one-half of the manual titration. With a wide application range, the method was easy to operateand less to be disturbed by human factors, it is very suitable for batch and rapid determination of fatty acid value in grain. In a word, this method provided a suitable method for strict quality control in the grass-roots grain storage companies when purchasing grain and detection of large quantities fatty acid value in grain inspection agency. |
| first_indexed | 2024-03-13T06:33:02Z |
| format | Article |
| id | doaj.art-756eb2ec80254aca9f4ff3a601057dc2 |
| institution | Directory Open Access Journal |
| issn | 1007-7561 |
| language | English |
| last_indexed | 2024-03-13T06:33:02Z |
| publishDate | 2020-09-01 |
| publisher | Academy of National Food and Strategic Reserves Administration |
| record_format | Article |
| series | Liang you shipin ke-ji |
| spelling | doaj.art-756eb2ec80254aca9f4ff3a601057dc22023-06-09T08:17:41ZengAcademy of National Food and Strategic Reserves AdministrationLiang you shipin ke-ji1007-75612020-09-0128520020610.16210/j.cnki.1007-7561.2020.05.029The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration MethodLI Wei-xiang0ZHANG Ji-guang1 WU Wan-fu2 LV Shi-dong3Kunming Grain and Oil and Feed Product Quality Inspection center, Kunming, Yunnan 650118, ChinaKunming Grain and Oil and Feed Product Quality Inspection center, Kunming, Yunnan 650118, ChinaKunming Grain and Oil and Feed Product Quality Inspection center, Kunming, Yunnan 650118, ChinaKunming Grain and Oil and Feed Product Quality Inspection center, Kunming, Yunnan 650118, China A fatty acid value determination method in grain was developed by using automatic photometric titrator with KOH as standard titration solution in this paper, in which magnetic stirring apparatus was selected as extraction device, anhydrous ethanol was used as extraction solvent, and thymol blue was used to control directing terminal. Finally, the fatty acid value was calculated by combining the consumed volume of KOH's standard titration solution. The instrument can automatically complete the whole process of extraction, filtration,quantitative transfer, titration and calculation. The results showed that the determination method has high precision, and the repeatability, accuracy and stability can meet the requirements of the national standard method, the consistency between instruments can meet the repeatability requirement of national standard method, the measuring time of paddy and wheat flour were one-third and one-half respectively of those by potentiometric or manual titration, and the measuring time of maize was two-fifths of the potentiometric titration and one-half of the manual titration. With a wide application range, the method was easy to operateand less to be disturbed by human factors, it is very suitable for batch and rapid determination of fatty acid value in grain. In a word, this method provided a suitable method for strict quality control in the grass-roots grain storage companies when purchasing grain and detection of large quantities fatty acid value in grain inspection agency.http://lyspkj.ijournal.cn/lyspkj/article/abstract/20200534?st=article_issuegrainfatty acid valuesautomatically photometric titration methodapplicability |
| spellingShingle | LI Wei-xiang ZHANG Ji-guang WU Wan-fu LV Shi-dong The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method Liang you shipin ke-ji grain fatty acid values automatically photometric titration method applicability |
| title | The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method |
| title_full | The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method |
| title_fullStr | The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method |
| title_full_unstemmed | The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method |
| title_short | The Applicability Study for Determination of Fatty Acids in the Grain by Using Automatic Photometric Titration Method |
| title_sort | applicability study for determination of fatty acids in the grain by using automatic photometric titration method |
| topic | grain fatty acid values automatically photometric titration method applicability |
| url | http://lyspkj.ijournal.cn/lyspkj/article/abstract/20200534?st=article_issue |
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