Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism
This study investigated the effects of different ozone treatment times (0, 10, 20, 30, 40, and 50 min) on off-flavor removal from egg white powder (EWP) and the underlying mechanism. Results showed that compared with the untreated group (0 min), ozone treatment reduced the contents of the characteri...
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China Food Publishing Company
2024-12-01
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| Series: | Shipin Kexue |
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| Online Access: | https://www.spkx.net.cn/fileup/1002-6630/PDF/2024-45-24-020.pdf |
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| author | XIN Xiaojuan, LIU Ying, MA Lulu, HUO Jiaying, GAO Ying, DONG Shijian, LIU Liya, WANG Fengzhong, LI Shugang |
| author_facet | XIN Xiaojuan, LIU Ying, MA Lulu, HUO Jiaying, GAO Ying, DONG Shijian, LIU Liya, WANG Fengzhong, LI Shugang |
| author_sort | XIN Xiaojuan, LIU Ying, MA Lulu, HUO Jiaying, GAO Ying, DONG Shijian, LIU Liya, WANG Fengzhong, LI Shugang |
| collection | DOAJ |
| description | This study investigated the effects of different ozone treatment times (0, 10, 20, 30, 40, and 50 min) on off-flavor removal from egg white powder (EWP) and the underlying mechanism. Results showed that compared with the untreated group (0 min), ozone treatment reduced the contents of the characteristic off-flavor substances (geranyl acetone, 1-octen-3-ol, octanal, and nonanal) in EWP by more than 40.94%. The sensory off-flavor score reached its lowest point (which decreased by 75% compared with the untreated group) after 20 min of ozone treatment, when egg white protein was slightly oxidized, leading to protein unfolding and structural disordering, increased carbonyl content and particle size, and decreased endogenous fluorescence intensity. In addition, fluorescence quenching and molecular docking showed that the major binding force between egg white protein and off-flavor substances was hydrophobic interaction, and their main binding sites were in a hydrophobic cavity composed of amino acids such as Leu66, Lys69, Glu87E, Ala87F, Cys87H, Glu129, Tyr130, Cys133, and Gly320. Ozone treatment for 20 min reduced the hydrophobic interaction between egg white protein and off-flavor substances by 45.98% compared with the untreated group, releasing off-flavor substances and reducing sensory off-flavor score, thereby ultimately deodorizing EWP. In conclusion, ozone treatment can reduce the off-flavor of EWP, the most pronounced effect being observed after 20 min treatment. |
| format | Article |
| id | doaj-art-ad6550fd7aa34f30aa6476ecf507a673 |
| institution | Kabale University |
| issn | 1002-6630 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | China Food Publishing Company |
| record_format | Article |
| series | Shipin Kexue |
| spelling | doaj-art-ad6550fd7aa34f30aa6476ecf507a6732025-02-05T09:08:01ZengChina Food Publishing CompanyShipin Kexue1002-66302024-12-01452417818610.7506/spkx1002-6630-20240619-135Deodorization of Egg White Powder by Ozone Treatment and Underlying MechanismXIN Xiaojuan, LIU Ying, MA Lulu, HUO Jiaying, GAO Ying, DONG Shijian, LIU Liya, WANG Fengzhong, LI Shugang0(1. Engineering Research Center of Bio-process, Ministry of Education, Key Laboratory for Animal Food Green Manufacturing and Resource Mining of Anhui Province, School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; 2. Anhui Rongda Food Co. Ltd., Xuancheng 242200, China; 3. Institute of Western Agriculture, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China)This study investigated the effects of different ozone treatment times (0, 10, 20, 30, 40, and 50 min) on off-flavor removal from egg white powder (EWP) and the underlying mechanism. Results showed that compared with the untreated group (0 min), ozone treatment reduced the contents of the characteristic off-flavor substances (geranyl acetone, 1-octen-3-ol, octanal, and nonanal) in EWP by more than 40.94%. The sensory off-flavor score reached its lowest point (which decreased by 75% compared with the untreated group) after 20 min of ozone treatment, when egg white protein was slightly oxidized, leading to protein unfolding and structural disordering, increased carbonyl content and particle size, and decreased endogenous fluorescence intensity. In addition, fluorescence quenching and molecular docking showed that the major binding force between egg white protein and off-flavor substances was hydrophobic interaction, and their main binding sites were in a hydrophobic cavity composed of amino acids such as Leu66, Lys69, Glu87E, Ala87F, Cys87H, Glu129, Tyr130, Cys133, and Gly320. Ozone treatment for 20 min reduced the hydrophobic interaction between egg white protein and off-flavor substances by 45.98% compared with the untreated group, releasing off-flavor substances and reducing sensory off-flavor score, thereby ultimately deodorizing EWP. In conclusion, ozone treatment can reduce the off-flavor of EWP, the most pronounced effect being observed after 20 min treatment.https://www.spkx.net.cn/fileup/1002-6630/PDF/2024-45-24-020.pdfegg white powder; off-flavor; ozone treatment; protein structure; binding force |
| spellingShingle | XIN Xiaojuan, LIU Ying, MA Lulu, HUO Jiaying, GAO Ying, DONG Shijian, LIU Liya, WANG Fengzhong, LI Shugang Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism Shipin Kexue egg white powder; off-flavor; ozone treatment; protein structure; binding force |
| title | Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism |
| title_full | Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism |
| title_fullStr | Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism |
| title_full_unstemmed | Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism |
| title_short | Deodorization of Egg White Powder by Ozone Treatment and Underlying Mechanism |
| title_sort | deodorization of egg white powder by ozone treatment and underlying mechanism |
| topic | egg white powder; off-flavor; ozone treatment; protein structure; binding force |
| url | https://www.spkx.net.cn/fileup/1002-6630/PDF/2024-45-24-020.pdf |
| work_keys_str_mv | AT xinxiaojuanliuyingmaluluhuojiayinggaoyingdongshijianliuliyawangfengzhonglishugang deodorizationofeggwhitepowderbyozonetreatmentandunderlyingmechanism |