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Cao S, Fu Y. Lipid degradation contributes to flavor formation during air-dried camel jerky processing. Food Chem X 2024; 23:101683. [PMID: 39157658 PMCID: PMC11327448 DOI: 10.1016/j.fochx.2024.101683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 07/15/2024] [Accepted: 07/20/2024] [Indexed: 08/20/2024] Open
Abstract
Lipids play an important role in flavor formation in meat products. To determine the contribution of lipids to flavor formation during air-dried camel jerky processing, lipid changes were analyzed by UHPLC-Q-Exactive Orbitrap MS/MS in this study, and volatile compounds were identified by HS-SPME-GC-ToF-MS. Results showed that 606 lipid molecules belonging to 30 subclasses were identified and 206 differential lipid molecules were screened out (VIP > 1, P < 0.05); Cer/NS (d18:1/20:0), LPE (18:1), FA (18:0), GlcADG (12:0/24:1), and PE (18:2e/22:5) were identified as potential lipid biomarkers. A total of 96 volatile compounds were also identified, and 16 of these were identified as key aroma compounds in air-dried camel jerky. Meanwhile, 11 differential lipids significantly, negatively correlated with 7 key aroma compounds (P < 0.05) during processing, indicating that the precursors produced by the degradation of lipid molecules were important sources of volatile flavor substances in air-dried camel jerky.
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Affiliation(s)
- Shenyi Cao
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830017, China
| | - Yinghua Fu
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830017, China
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Li C, Zheng Z, Wang G, Chen G, Zhou N, Zhong Y, Yang Y, Wu H, Yang C, Liao G. Revealing the intrinsic relationship between microbial communities and physicochemical properties during ripening of Xuanwei ham. Food Res Int 2024; 186:114377. [PMID: 38729733 DOI: 10.1016/j.foodres.2024.114377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/25/2024] [Accepted: 04/17/2024] [Indexed: 05/12/2024]
Abstract
To clarify the relationship between microorganisms and physicochemical indicators of Xuanwei ham. Six ham samples for the first, second and third year were selected, respectively. The changes of physicochemical properties, the free fatty acids and microbial communities of Xuanwei ham were investigated by GC-MS and high-throughput sequencing technology. Results showed that scores of colour, overall acceptability, texture, taste and aroma were the highest in the third year sample. With increasing ripening time, moisture content, water activity (Aw), lightness (L*), springiness, and resilience decreased continuously, and yellowness (b*) was the highest in the second year sample. 31 free fatty acids were detected, and unsaturated fatty acids such as palmitoleic acid, oleic acid, and linoleic acid were the major fatty acids. The content of palmitoleic acid, oleic acid and eicosenoic acid increased significantly during processing. At the phylum level, the dominant bacteria were Proteobacteria and Firmicutes, and fungi were Ascomycota. At the genus level, the dominant bacteria were Staphylococcus and Psychrobacter, and fungi were Aspergillus. Correlation analysis showed that water content and Aw were closely related to microorganisms, and most unsaturated fatty acids were significantly correlated with microorganisms. These findings showed that microorganisms played an important role in the quality of Xuanwei ham, and provided a scientific basis for the quality control of Xuanwei ham.
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Affiliation(s)
- Cong Li
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Zhijie Zheng
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Guiying Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China.
| | - Guanghui Chen
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Nannan Zhou
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Yanru Zhong
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Yuan Yang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Hongyan Wu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Chunfang Yang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China
| | - Guozhou Liao
- Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China.
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Li C, Zou Y, Liao G, Zheng Z, Chen G, Zhong Y, Wang G. Identification of characteristic flavor compounds and small molecule metabolites during the ripening process of Nuodeng ham by GC-IMS, GC-MS combined with metabolomics. Food Chem 2024; 440:138188. [PMID: 38100964 DOI: 10.1016/j.foodchem.2023.138188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 11/19/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
To investigate effects of metabolites and volatile compounds on the quality of Nuodeng ham, gas chromatography-mass spectrometry (GC-MS), ultra-high performance liquid chromatography-Q exactive orbitrap-mass spectrometry (UHPLC-QE-MS), and gas chromatography-ion transfer spectroscopy (GC-IMS) were used to analyze the differences of free fatty acids, small molecule metabolites and volatile compounds of Nuodeng ham at different ripening stages (the first, second and third year sample). 40 free fatty acids were detected. 757 and 300 metabolites were detected in positive and negative ion modes, respectively. 48 differential metabolites (VIP ≥ 1.5, P < 0.05) might important components affecting flavor differences of Nuodeng ham. Metabolic pathways revealed that fermenting-ripening of ham was associated with 31 metabolic pathways, among, 19 pathways were significant (Impact > 0.01, P < 0.05). 58 volatile compounds were identified, combined with PCA and PLS-DA, 15 flavor markers were screened out. These findings provide a scientific basis for further research on the flavor formation mechanism of Nuodeng ham.
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Affiliation(s)
- Cong Li
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Yingling Zou
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Guozhou Liao
- Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China.
| | - Zhijie Zheng
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Guanghui Chen
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Yanru Zhong
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Guiying Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming 650201, China; Livestock Product Processing and Engineering Technology Research Center of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China.
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Zou H, Deng C, Li J, Lou A, Liu Y, Luo J, Shen Q, Quan W. Quantitative Proteomics Reveals the Relationship between Protein Changes and Volatile Flavor Formation in Hunan Bacon during Low-Temperature Smoking. Foods 2024; 13:1360. [PMID: 38731730 PMCID: PMC11083045 DOI: 10.3390/foods13091360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
This study aimed to investigate the changes in proteins and volatile flavor compounds that occur in bacon during low-temperature smoking (LTS) and identify potential correlations between these changes. To achieve this, a combination of gas chromatography-mass spectrometry and proteomics was employed. A total of 42 volatile flavor compounds were identified in the bacon samples, and, during LTS, 11 key volatile flavor compounds with variable importance were found at a projection value of >1, including 2',4'-dihydroxyacetophenone, 4-methyl-2H-furan-5-one, Nonanal, etc. In total, 2017 proteins were quantified at different stages of LTS; correlation coefficients and KEGG analyses identified 27 down-regulated flavor-related proteins. Of these, seven were involved in the tricarboxylic acid (TCA) cycle, metabolic pathways, or amino acid metabolism, and they may be associated with the process of flavor formation. Furthermore, correlation coefficient analysis indicated that certain chemical parameters, such as the contents of free amino acids, carbonyl compounds, and TCA cycle components, were closely and positively correlated with the formation of key volatile flavor compounds. Combined with bioinformatic analysis, the results of this study provide insights into the proteins present in bacon at various stages of LTS. This study demonstrates the changes in proteins and the formation of volatile flavor compounds in bacon during LTS, along with their potential correlations, providing a theoretical basis for the development of green processing methods for Hunan bacon.
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Affiliation(s)
- Huiyu Zou
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Chuangye Deng
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Junnian Li
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Aihua Lou
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Yan Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Jie Luo
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Qingwu Shen
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
| | - Wei Quan
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.Z.); (C.D.); (J.L.); (A.L.); (Y.L.); (J.L.)
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China
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Hu S, Zhou G, Xu X, Zhang W, Li C. Insight into the impacts of Jinhua ham processing conditions on cathepsin B activity and conformation changes based on molecular simulation. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Liu F, Wang C, Li C, He L, Wang X, Zeng X, Dai Y. Effects of Process Parameters on the Quality of Suantang Beef. Foods 2022; 11:foods11223585. [PMID: 36429177 PMCID: PMC9689645 DOI: 10.3390/foods11223585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/13/2022] Open
Abstract
Suantang beef is a traditional delicious Chinese food cooked in Suantang (ST, a sour soup fermented by microorganisms). However, the impact of ST on beef quality is unclear, and the process of ST beef lacks unified technical standards. In the presented study, we found that the additional amount of salt, cooking time, meat thickness, and beef-ST ratio significantly affect the quality of ST beef. After optimization, it was found that when salt addition was 1%, cooking time was 3 min, meat thickness was 2 cm, and beef-ST ratio was 40%, the color determined by colorimeter, texture determined by texture analyzer, and sensory scores of beef cooked by ST were improved compared with boiled beef. ST decreased the pH value and cathepsin L activity of beef, increased the content of organic acid, and changed the protein composition of beef. ST made the beef have higher hardness, and have better chewiness and cohesion. At the same time, ST reduced the disagreeable odors of beef and improved beef flavor. In addition, 88 volatile compounds were detected in ST beef by HS-SPME/GC-MS. According to odor, threshold, and odor activity value (OAV), 24 critical aroma-active compounds were confirmed in ST beef. This study provides a basis for the potential industrialized production of ST beef.
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Affiliation(s)
- Fangrui Liu
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang 550025, China
- College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Chan Wang
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang 550025, China
- College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Cuiqin Li
- School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Laping He
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang 550025, China
- College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
- Correspondence: or ; Tel./Fax: +86-0851-88236702
| | - Xiao Wang
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang 550025, China
- College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Xuefeng Zeng
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang 550025, China
- College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Yifeng Dai
- Key Laboratory of Agricultural and Animal Products Store & Processing of Guizhou Province, Guizhou University, Guiyang 550025, China
- College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
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Optimization of Jinhua Ham Classification Method Based on Volatile Flavor Substances and Determination of Key Odor Biomarkers. Molecules 2022; 27:molecules27207087. [PMID: 36296687 PMCID: PMC9609906 DOI: 10.3390/molecules27207087] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
Jinhua ham is a traditional cured meat food in China. For a long time, its grade has mainly been evaluated by the human nose through the three-sticks method, which is highly subjective and is not conducive to establishing evaluation standards through odor markers. In this paper, we analyzed the well-graded Grade I–III hams provided by Jinzi Ham Co., Ltd. (Jinhua, China). Firstly, we used different extraction fibers, extraction temperatures, and extraction time to determine the optimal conditions for headspace solid-phase microextraction (HS-SPME). Then, the aroma components of Jinhua ham were analyzed by headspace solid-phase microextraction combined with gas chromatography–mass spectrometry (GC–MS), and OAV was calculated to screen the key aroma volatiles of three kinds of Jinhua ham. It was found that a total of 56 components were detected in the three types of ham. Among them, there are 21 kinds of key aroma volatiles. Aldehydes, alcohols, and acids are the three main components of Jinhua ham, and the content of aldehydes gradually decreases from Grade I to Grade III ham. The content of acids gradually increased, and we speculated that the increase in acid content was caused by the proliferation of microorganisms in Grade III ham. The key flavor volatiles in Grade I hams was hexanal and 2-methylbutanal. Grade I hams had a strong meat aroma, pleasant fatty, and roasted aroma without any off-flavors. In Grade II ham, the characteristic volatiles (E,E)-2,4-decadienal and ethyl isovalerate were detected. These two volatiles contribute greatly to the flavor of Grade II ham, which makes the flavor of Grade II ham have a special fruity aroma. They also may be prone to sourness and affect the flavor of the ham. Volatiles with low threshold values, such as pyrazines, furans, and sulfur-containing compounds, were relatively high in Grade III hams. This may also contribute to the poorer flavor quality of Grade III hams. This experiment provided a reliable test method and evaluation basis for the rating of Jinhua ham. These results have positive implications for the establishment of odor markers-based grading criteria.
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