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Mahmoud MAA, Zhang Y. Enhancing Odor Analysis with Gas Chromatography-Olfactometry (GC-O): Recent Breakthroughs and Challenges. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:9523-9554. [PMID: 38640191 DOI: 10.1021/acs.jafc.3c08129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
Gas chromatography-olfactometry (GC-O) has made significant advancements in recent years, with breakthroughs in its applications and the identification of its limitations. This technology is widely used for analyzing complex odor patterns. The review begins by explaining the principles of GC-O, including sample preparation, separation methods, and olfactory evaluation techniques. It then explores the diverse range of applications where GC-O has found success, such as food and beverage industries, environmental monitoring, perfume and aroma development, and forensic analysis. One of the major breakthroughs in GC-O analysis is the improvement in separation power and resolution of odorants. Techniques like rapid GC, comprehensive two-dimensional GC, and multidimensional GC have enhanced the identification and quantification of odor-active chemicals. However, GC-O also has limitations. These include the challenges in detecting and quantifying trace odorants, dealing with matrix effects, and ensuring the repeatability and consistency of results across laboratories. The review examines these limitations closely and discusses potential solutions and future directions for improvement in GC-O analysis. Overall, this review presents a comprehensive overview of the recent advances in GC-O, covering breakthroughs, applications, and limitations. It aims to promote the wider usage of GC-O analysis in odor analysis and related industries. Researchers, practitioners, and anyone interested in leveraging the capabilities of GC-O in analyzing complex odor patterns will find this review a valuable resource. The article highlights the potential of GC-O and encourages further research and development in the field.
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Affiliation(s)
- Mohamed A A Mahmoud
- Department of Agricultural Biochemistry, Faculty of Agriculture, Ain Shams University, Hadayek Shobra, Cairo 11241, Egypt
| | - Yanyan Zhang
- Department of Flavor Chemistry, Institute of Food Science and Biotechnology, University of Hohenheim, Fruwirthstraße 12, Stuttgart 70599, Germany
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Zhang J, Zhong Y, Wang D, Deng Y, Li Y, Liu C, Wang JLT. Effect of mixed fermentation of Lactiplantibacillus plantarum and Lactiplantibacillus pentosus on phytochemical and flavor characteristics of Wallace melon juice. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:3776-3787. [PMID: 38294418 DOI: 10.1002/jsfa.13263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/25/2023] [Accepted: 01/03/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND Melons (Cucumis melo L.) are among the most commonly consumed fruits but they are highly susceptible to mechanical damage and rot during storage and transportation. New processed products are needed to avoid postharvest fruit loss and to increase health benefits. Fermentation is an effective means of utilizing the nutrients and improving flavor. RESULTS Fermented melon juice (MJ) was prepared using three potential probiotics Lactiplantibacillus plantarum CICC21824 (LP), Lactiplantibacillus plantarum GB3-2 (LG), and Lactiplantibacillus pentosus XZ-34 (LX). The nutrition, flavor characteristics, and digestive properties of different fermented MJs were compared. The results demonstrated that, in comparison with mono-fermentation, mixed fermentation by LG and LX could increase the level of organic acids and phenolic acids. Correspondingly, antioxidant capacity was improved significantly and positively correlated with p-coumaric acid and cinnamic acid content. The production of alcohols and acids was more strongly enhanced by mixed culture fermentation, whereas mono-fermentation reduced the content of esters, especially ethyl acetate and isopropyl acetate. Aldehydes and ketones increased significantly in fermented MJ, and damascenone and heptanal could be the characteristic aroma compounds. CONCLUSION Mixed fermented MJ provides more beneficial phytochemicals, better flavor, and stronger antioxidant properties than mono-fermentation. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Junwei Zhang
- Department of Food Science and Technology, Bor Luh Food Safety Center, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Zhong
- Department of Food Science and Technology, Bor Luh Food Safety Center, Shanghai Jiao Tong University, Shanghai, China
| | - Danfeng Wang
- Department of Food Science and Technology, Bor Luh Food Safety Center, Shanghai Jiao Tong University, Shanghai, China
| | - Yun Deng
- Department of Food Science and Technology, Bor Luh Food Safety Center, Shanghai Jiao Tong University, Shanghai, China
- Inner Mongolia Research Institute, Shanghai Jiao Tong University, Hohhot City, China
| | - Yuncheng Li
- College of Food and Biological Engineering, Chengdu University, Chengdu, China
| | - Cong Liu
- Department of Agriculture, Hetao College, Bayannur, China
| | - Ji-Li-Te Wang
- Department of Agriculture, Hetao College, Bayannur, China
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Guo K, Zhao J, Fang S, Zhang Q, Nie L, Zhao W. The effects of different rootstocks on aroma components, activities and genes expression of aroma-related enzymes in oriental melon fruit. PeerJ 2024; 12:e16704. [PMID: 38192601 PMCID: PMC10773451 DOI: 10.7717/peerj.16704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/30/2023] [Indexed: 01/10/2024] Open
Abstract
Grafting is widely applied in the cultivation of melon. In this study, 'Qinmi No.1' (Cucumis melo L.(QG)) and 'Ribenxuesong' (Cucurbita maxima Duch. (RG)) were used as rootstocks for 'Qingxin Yangjiaocui' (Cucumis melo L.). The results showed that grafting with muskmelon rootstocks had no significant effect on fruit aroma, but grafting with pumpkin rootstocks significantly reduced the odor intensity and odor preference scores of melon fruits. Compared with the fruits from self-grafted plants (SG), four new aromatic volatiles with a sweet smell were detected, the alcohol dehydrogenase (ADH) activity was significantly decreased at 30 DAP, but unaffected at 42 DAP in QG fruits. There was no difference for alcohol acetyltransferase (AAT) activity between QG and SG fruits. The expression level of CmADH2 was significantly higher at 30 DAP and 42 DAP, but CmAAT2 was significantly lower at 42 DAP in QG fruits compared with SG fruits. In RG fruits, the main aroma compounds including butanoic acid ethyl ester, 2-methyl-2-butene-1-al, and 2-methylheptan-1-al were absent, while the volatile compounds with unpleasant odor characteristics including trans, cis-2,6-nonadien-1-ol, (E,E)-2,4-heptadienal, octanoic acid, and styrene were detected. Compared with SG fruits, 1-nonanol and 1-heptanol with green odor characteristics were significantly increased, but eucalyptol and farnesene with fruity aroma characteristics were significantly decreased in RG fruits. The ADH activity of RG fruits was significantly lower than that of SG fruits at 30 DAP and the AAT activity was significantly lower than that of SG fruits at 42 DAP. In addition, the expression levels of CmADH and CmAAT homologs in RG fruits were significantly lower than those in SG or QG fruits. These results show that grafting with pumpkin rootstocks affected the main aroma components, reduced ADH and AAT activities, and down-regulated the expression levels of CmADHs and CmAATs in the melon fruits. This study reveals the mechanism of different rootstocks on melon fruit aroma quality, and lays a theoretical foundation for the selection of rootstocks in melon production. Future studies using overexpression or CRISPR/CAS system to obtain stable transgenic lines of genes encoding key aromatic volatiles, would be promising to effectively improve the flavor quality of melon.
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Affiliation(s)
- Kedong Guo
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, BaoDing, Hebei, China
| | - Jiateng Zhao
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, BaoDing, Hebei, China
| | - Siyu Fang
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, BaoDing, Hebei, China
| | - Qian Zhang
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, BaoDing, Hebei, China
| | - Lanchun Nie
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, BaoDing, Hebei, China
- Collaborative Innovation Center of Vegetative Industry of Hebei Province, BaoDing, Hebei, China
| | - Wensheng Zhao
- College of Horticulture, Hebei Agricultural University, Baoding, Hebei, China
- Hebei Key Laboratory of Vegetable Germplasm Innovation and Utilization, BaoDing, Hebei, China
- Collaborative Innovation Center of Vegetative Industry of Hebei Province, BaoDing, Hebei, China
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Hou X, Jiang J, Luo C, Rehman L, Li X, Xie X. Advances in detecting fruit aroma compounds by combining chromatography and spectrometry. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:4755-4766. [PMID: 36782102 DOI: 10.1002/jsfa.12498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/13/2023] [Accepted: 02/13/2023] [Indexed: 06/08/2023]
Abstract
Fruit aroma is produced by volatile compounds, which can significantly enhance fruit flavor. These compounds are highly complex and have remarkable pharmacological effects. The synthesis, concentration, type, and quantity of fruit aroma substances are affected by various factors, both abiotic and biotic. To fully understand the aroma substances of various fruits and their influencing factors, detection technology can be used. Many methods exist for detecting aroma compounds, and approaches combining multiple instruments are widely used. This review describes and compares each detection technology and discusses the potential use of combined technologies to provide a comprehensive understanding of fruit aroma compounds and the factors influencing their synthesis. These results can inform the development and utilization of fruit aroma substances. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xiaolong Hou
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, PR China
| | - Junmei Jiang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, PR China
| | - Changqing Luo
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, PR China
| | - Latifur Rehman
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, PR China
- Department of Biotechnology, University of Swabi, Swabi, Pakistan
| | - Xiangyang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, PR China
| | - Xin Xie
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, PR China
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Zhang J, Sun Y, Guan X, Qin W, Zhang X, Ding Y, Yang W, Zhou J, Yu X. Characterization of key aroma compounds in melon spirits using the sensomics concept. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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