The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils
Cold-pressed hemp oils are characterized by an intense color, which is undesirable when used directly. Therefore, research was undertaken on removing chlorophyll and carotenoids effectively. This publication presents the results of tests that verified the adsorption properties of seven bleaching ear...
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MDPI AG
2023-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/1/390 |
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| author | Damian Marcinkowski Edyta Nizio Wojciech Golimowski Kamil Czwartkowski |
| author_facet | Damian Marcinkowski Edyta Nizio Wojciech Golimowski Kamil Czwartkowski |
| author_sort | Damian Marcinkowski |
| collection | DOAJ |
| description | Cold-pressed hemp oils are characterized by an intense color, which is undesirable when used directly. Therefore, research was undertaken on removing chlorophyll and carotenoids effectively. This publication presents the results of tests that verified the adsorption properties of seven bleaching earths (BE1–BE7) in two doses (2.5% and 5.0%) in the low-temperature bleaching process of hemp oils. These oils were obtained by cold and hot pressing of the seeds of three varieties of hemp (<i>Cannabis sativa</i> L.): Finola, Earlina 8FC, and Secuieni Jubileu. The color change and the content of carotenoid and chlorophyll pigments in the bleached oils were verified using the colorimetric method (CIE-Lab). The BEs used had different abilities to reduce the content of natural dyes connected with oil decolorization. The conducted research allowed us to characterize the influence of BEs on the organoleptic properties of the tested oils. Hemp oil obtained from the Secuieni Jubileu CP and HP hemp variety should be bleached with unmodified magnesian bentonite at 2.5%. Unmodified attapulgite clay is not recommended for this variety, as it strongly adsorbs carotenoids from the oil. |
| first_indexed | 2024-03-08T15:11:21Z |
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| id | doaj.art-febbf68fc3cd4b908692b785c86772bd |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-08T15:11:21Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-febbf68fc3cd4b908692b785c86772bd2024-01-10T14:51:59ZengMDPI AGApplied Sciences2076-34172023-12-0114139010.3390/app14010390The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) OilsDamian Marcinkowski0Edyta Nizio1Wojciech Golimowski2Kamil Czwartkowski3Department of Agroengineering and Quality Analysis, Faculty of Production Engineering, Wroclaw University of Economics and Business, Komandorska 118/120, 53-345 Wrocław, PolandDepartment of Agroengineering and Quality Analysis, Faculty of Production Engineering, Wroclaw University of Economics and Business, Komandorska 118/120, 53-345 Wrocław, PolandDepartment of Agroengineering and Quality Analysis, Faculty of Production Engineering, Wroclaw University of Economics and Business, Komandorska 118/120, 53-345 Wrocław, PolandDepartment of Agroengineering and Quality Analysis, Faculty of Production Engineering, Wroclaw University of Economics and Business, Komandorska 118/120, 53-345 Wrocław, PolandCold-pressed hemp oils are characterized by an intense color, which is undesirable when used directly. Therefore, research was undertaken on removing chlorophyll and carotenoids effectively. This publication presents the results of tests that verified the adsorption properties of seven bleaching earths (BE1–BE7) in two doses (2.5% and 5.0%) in the low-temperature bleaching process of hemp oils. These oils were obtained by cold and hot pressing of the seeds of three varieties of hemp (<i>Cannabis sativa</i> L.): Finola, Earlina 8FC, and Secuieni Jubileu. The color change and the content of carotenoid and chlorophyll pigments in the bleached oils were verified using the colorimetric method (CIE-Lab). The BEs used had different abilities to reduce the content of natural dyes connected with oil decolorization. The conducted research allowed us to characterize the influence of BEs on the organoleptic properties of the tested oils. Hemp oil obtained from the Secuieni Jubileu CP and HP hemp variety should be bleached with unmodified magnesian bentonite at 2.5%. Unmodified attapulgite clay is not recommended for this variety, as it strongly adsorbs carotenoids from the oil.https://www.mdpi.com/2076-3417/14/1/390hemp oilbleaching earthFinolaEarlina 8FCSecuieni Jubileulow-temperature bleaching |
| spellingShingle | Damian Marcinkowski Edyta Nizio Wojciech Golimowski Kamil Czwartkowski The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils Applied Sciences hemp oil bleaching earth Finola Earlina 8FC Secuieni Jubileu low-temperature bleaching |
| title | The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils |
| title_full | The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils |
| title_fullStr | The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils |
| title_full_unstemmed | The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils |
| title_short | The Influence of the Used Bleaching Earth on the Content of Natural Dyes in Hemp (<i>Cannabis sativa</i> L.) Oils |
| title_sort | influence of the used bleaching earth on the content of natural dyes in hemp i cannabis sativa i l oils |
| topic | hemp oil bleaching earth Finola Earlina 8FC Secuieni Jubileu low-temperature bleaching |
| url | https://www.mdpi.com/2076-3417/14/1/390 |
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