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Cai Y, Pan X, Zhang D, Yuan L, Lao F, Wu J. The kinetic study of 2-acetyl-1-pyrroline accumulation in the model system: An insight into enhancing rice flavor through the Maillard reaction. Food Res Int 2024; 191:114591. [PMID: 39059892 DOI: 10.1016/j.foodres.2024.114591] [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: 12/12/2023] [Revised: 05/27/2024] [Accepted: 06/01/2024] [Indexed: 07/28/2024]
Abstract
Controlling the Maillard reaction may affect the generation of 2-acetyl-1-pyrroline, the key aroma compound in rice. In this study, the kinetics of 2-acetyl-1-pyrroline accumulation in the glucose/proline model system was comprehensively investigated and extra methylglyoxal or glyoxal was added to enhance 2-acetyl-1-pyrroline concentrations during rice cooking. Using the multi-response kinetic modeling to derive kinetic parameters, the formation of glyoxal, as the reactive intermediate, was rate-determining for the overall generation rate of 2-acetyl-1-pyrroline. Besides, although 2-acetyl-1-pyrroline generation was easier to occur with lower activation energy, much higher depletion rates of 2-acetyl-1-pyrrroline at 120 °C and 140 °C led to maximal 2-acetyl-1-pyrroline accumulation at the lower temperature of 100 °C. Furthermore, the inclusion of 0.05 μmol/kg additional methylglyoxal in cooked rice significantly enhanced 2-acetyl-1-pyrroline generation. The work suggested that the development of rice products with superior flavor quality may be achieved by the slight accumulation of intermediates prior to thermal processing.
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Affiliation(s)
- Yanpei Cai
- College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agricultural and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083, PR China.
| | - Xin Pan
- College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agricultural and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083, PR China.
| | - Donghao Zhang
- College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agricultural and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083, PR China.
| | - Lin Yuan
- College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agricultural and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083, PR China.
| | - Fei Lao
- College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agricultural and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083, PR China.
| | - Jihong Wu
- College of Food Science and Nutritional Engineering, China Agricultural University, National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agricultural and Rural Affairs, Beijing Key Laboratory for Food Non-thermal Processing, Beijing 100083, PR China.
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Li H, Guan H, Zhang X, Xing S, Liu W, Kim IC, Gong H. The Impact of Different Cooking Methods on the Flavor Profile of Fermented Chinese Spicy Cabbage. Molecules 2023; 28:6539. [PMID: 37764317 PMCID: PMC10535354 DOI: 10.3390/molecules28186539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Chinese spicy cabbage (CSC) is a common traditional fermented vegetable mainly made of Chinese cabbage. In addition to eating raw, boiling and stir-frying are the most common cooking methods for CSC. To identify the impacts of boiling or stir-frying on the quality of CSC, the physicochemical properties, flavor compounds, and sensory properties of CSC were analyzed. A total of 47 volatile flavor compounds (VFCs) were detected by gas chromatography-mass spectrometry. Sulfide was determined as the main flavor compound of CSC, mainly contributed by cabbage, garlic, and onion odors. The content of sulfide decreased significantly after cooking. Nonanal, geranyl acetate, and linalool were newly generated after boiling with odor activity value (OAV) > 1, and contributed fatty, sweet, fruity, and floral odors to BL-CSC. 1-Octen-3-one, 1-octen-3-ol, octanal, nonanal, and (E)-2-nonenal were newly generated after stir-frying with OAV > 1, and contributed mushroom, fatty, and green odors to SF-CSC. Diallyl trisulfide, nonanal, (E)-β-ionone, β-sesquiphellandrene, and (E)-2-decenal were considered as the potential key aroma compounds (KACs) to distinguish the CSCs after different heat treatment. After cooking, the total titratable acidity of CSC increased and the sensory properties changed significantly. This study provides valuable information and guidance on the sensory and flavor changes of thermal processing fermented vegetables.
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Affiliation(s)
- Huamin Li
- School of Food Engineering, Ludong University, Yantai 264025, China
- Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Ludong University, Yantai 264025, China
- Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, China
| | - Hui Guan
- School of Food Engineering, Ludong University, Yantai 264025, China
| | - Xiru Zhang
- School of Food Engineering, Ludong University, Yantai 264025, China
| | - Shaohua Xing
- School of Food Engineering, Ludong University, Yantai 264025, China
| | - Wenli Liu
- School of Food Engineering, Ludong University, Yantai 264025, China
- Department of Food Engineering, Mokpo National University, Jeonnam 534729, Republic of Korea
| | - In-Cheol Kim
- Department of Food Engineering, Mokpo National University, Jeonnam 534729, Republic of Korea
| | - Hansheng Gong
- School of Food Engineering, Ludong University, Yantai 264025, China
- Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Ludong University, Yantai 264025, China
- Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, China
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Zheng Z, Zhang C, Liu K, Liu Q. Volatile Organic Compounds, Evaluation Methods and Processing Properties for Cooked Rice Flavor. RICE (NEW YORK, N.Y.) 2022; 15:53. [PMID: 36309628 PMCID: PMC9617995 DOI: 10.1186/s12284-022-00602-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 10/14/2022] [Indexed: 05/13/2023]
Abstract
Rice (Oryza sativa L.), as the main refined grain in China, has attracted much attention in terms of quality. Rice is usually consumed after cooking, and it is a commonly staple food. Nowdays, people's requirements for cooked rice focus more on the taste characteristics and quality. Furthermore, aroma is one of the primary sensory reference points, which is the most intuitive way for people to judge cooked rice. By integrating and analyzing the researches of cooked rice aroma identification in recent five years, this paper expounds the extraction and identification methods (sensory evaluation method, GC-MS, SPME, MOS sensors, electronic nose, etc.) of the flavor substances in cooked rice, as the processing methods and properties of cooked rice, and the volatile organic compounds of cooked rice under different conditions are summarized as well.
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Affiliation(s)
- Zichen Zheng
- College of Mechanical Engineering, Yangzhou University, 196 West Huayang Road, Yangzhou, 225127, Jiangsu Province, People's Republic of China
| | - Chao Zhang
- College of Mechanical Engineering, Yangzhou University, 196 West Huayang Road, Yangzhou, 225127, Jiangsu Province, People's Republic of China.
| | - Kewei Liu
- College of Mechanical Engineering, Yangzhou University, 196 West Huayang Road, Yangzhou, 225127, Jiangsu Province, People's Republic of China
| | - Qiaoquan Liu
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, College of Agriculture, Yangzhou University, Yangzhou, 225009, People's Republic of China
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Hu Y, Zhou X, Hu C, Yu W. HS-GC-IMS identification of volatile aromatic compounds of freshly-cooked rice packaged with different disposable lunchboxes. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129516. [PMID: 35816796 DOI: 10.1016/j.jhazmat.2022.129516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/28/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
The rapid development of online-to-offline food delivery service has necessitated the replacement of plastic lunchbox using biodegradable ones. In current study, a total number of fourteen panelists were firstly recruited and trained to investigate how different commercial disposable lunchboxes affect the freshly cooked rice sensory properties during heat preservation (60 °C, 60 min). The lunchboxes were made of pure polypropylene (PP), polypropylene-starch (PP-S), pure wheat-straw and sugarcane-straw (WS & SS) and Paper. The discrepancy of volatile aromatic substances was then analyzed using headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) to study the possible mechanism beneath the variations of the influences of different lunchboxes on the aromatic properties of rice. Results showed that, compared with the textural attributes, the aroma was significantly and positively correlated with panelist's acceptability, among which, the aroma of starchy, sulfur and smoky are the most important ones. The moisture absorption plays an important role in affecting the aromatic characteristics of the packaged rice. While all lunchboxes have inhibitory effects on the production of volatile flavor substances including 2,6-Dimethylpyrazine, 2-Acetylpyrazine and γ-Octalactone, pure PP and PP-S lunchboxes generated undesirable flavor substances including 2-Ethyl-1-hexanl and Camphene, and thus reduced panelist's preferences. It was also found that the panelist liked the rice packaged by Paper lunchbox the best because of its better performance in maintaining the aroma of starchy and sulfur, the two substances that are associated with the higher concentration of ethereal and fruity volatile flavor substances. This study provides important information for manufacturers to understand how different disposable lunchboxes may impact the textural and aromatic properties of packaged foods.
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Affiliation(s)
- Yi Hu
- Department of Food Packaging Engineering, Jinan University, Qianshan Road 206, Zhuhai City 519070, China
| | - Xianglong Zhou
- Department of Food Science & Engineering, Jinan University, Huangpu West Avenue 601, Guangzou City 510632, Guangdong, China; State Key Labotraty of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Changying Hu
- Department of Food Packaging Engineering, Jinan University, Qianshan Road 206, Zhuhai City 519070, China; Department of Food Science & Engineering, Jinan University, Huangpu West Avenue 601, Guangzou City 510632, Guangdong, China.
| | - Wenwen Yu
- Department of Food Science & Engineering, Jinan University, Huangpu West Avenue 601, Guangzou City 510632, Guangdong, China.
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