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Park J, Park HY, Chung HJ, Oh SK. Starch Structure of Raw Materials with Different Amylose Contents and the Brewing Quality Characteristics of Korean Rice Beer. Foods 2023; 12:2544. [PMID: 37444283 DOI: 10.3390/foods12132544] [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: 06/15/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
This study aimed to explore suitable processing materials for rice beer (RB) production by analyzing the starch structure of the raw materials utilized for brewing beer and the quality characteristics of RB. We used malt, employing the Heugho cultivar as the main ingredient, and produced beer containing 30% rice. The regular amylose-containing cultivars Samgwang (SA) and Hangaru (HA) and the high-amylose-containing cultivar Dodamssal (DO) were used as adjuncts. Distribution of the short molecular chains of the starch amylopectin was the highest for SA and malt at 29.3% and 27.1%, respectively. Glucose content was the highest in the wort prepared with 100% malt and 30% SA + 70% malt. The alcohol content in SA RB and HA RB was higher than that in beer prepared with 100% malt. DO RB had the least bitterness and volatile components, such as acetaldehyde and ethyl acetate. The three rice cultivars tested in this study are suitable as starch adjuncts for RB production. The characteristics of RBs varied depending on the molecular structure of the ingredients, irrespective of their amylose contents. SA could be considered a craft beer with quality characteristics and rich flavor components, similar to 100% malt beer, compared to other RBs.
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Affiliation(s)
- Jiyoung Park
- Department of Central Area Crop Science, National Institute of Crop Science (NICS), Rural Development Administration (RDA), Suwon 16429, Republic of Korea
| | - Hye Young Park
- Department of Central Area Crop Science, National Institute of Crop Science (NICS), Rural Development Administration (RDA), Suwon 16429, Republic of Korea
| | - Hyun-Jung Chung
- Division of Food and Nutrition, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sea-Kwan Oh
- National Institute of Crop Science (NICS), Rural Development Administration (RDA), Chuncheon 24219, Republic of Korea
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Jiang L, Song J, Qi M, Suo W, Deng Y, Liu Y, Li L, Zhang D, Wang C, Li H. Modification mechanism of protein in rice adjuncts upon extrusion and its effects on nitrogen conversion during mashing. Food Chem 2023; 407:135150. [PMID: 36493491 DOI: 10.1016/j.foodchem.2022.135150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 11/27/2022] [Accepted: 12/01/2022] [Indexed: 12/05/2022]
Abstract
The traditional production of wort with adjunct-introduced was achieved by double mashing procedure, which hindered the utilization of proteins in adjunct and led to a deficiency of nitrogen in wort. In this study, the modification mechanism of the extrusion pretreatment on the structure characterization of rice flour protein was investigated. The decoction mashing procedure was performed to enhance the nitrogen conversion of the extruded rice adjunct. Decreased solubility along with disrupted secondary and tertiary structures of rice protein were observed after extrusion. As a result, the total nitrogen, free amino nitrogen, and free amino acids content of wort with extruded rice adjunct-introduced were improved by 23.28 %, 34.67 %, and 7.33 %, respectively, which could be verified by the electrophoretic patterns of the wort protein. The application of extrusion as a pretreatment of adjuncts can promote the protein availability of adjuncts in the decoction mashing stage.
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Affiliation(s)
- Lijun Jiang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Jialin Song
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Mingming Qi
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Wenjing Suo
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Yuxin Deng
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Yao Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Luxia Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Dongliang Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Chenjie Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China
| | - Hongjun Li
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255049, Shandong, China.
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Xu N, Ma F, Yin H, Yu W, Zhang C, Zhan S, Huang T. Impacts of malt protein removal on yeast fermentation efficiency. J Texture Stud 2023; 54:146-152. [PMID: 36175379 DOI: 10.1111/jtxs.12726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/21/2022] [Accepted: 09/23/2022] [Indexed: 11/28/2022]
Abstract
The effects of malt protein removal by Neutrase using Canadian and French commercial malts (Malt 1 and Malt 2) on mashing efficiency, and production of violate compounds during fermentation were determined using high performance liquid chromatography (HPLC), headspace-solid-phase microextraction coupled with gas chromatography-mass spectrometry analysis (HS-SMPE-GC-MS). HPLC results showed that for Malt 1 containing lower free- and total-β-amylase but higher α-amylase enzyme activity, Neutrase significantly increased the content of maltose, glucose and maltotriose, whereas for Malt 2, only glucose content increased. For Malt 1, the increased glucose/maltose ratio after Neutrase addition led to higher ethanol concentration than that with no Neutrase (4.06% vs. 2.09%), whereas for Malt 2, no significant differences were observed (2.92% vs. 3.09%). HS-SPME-GC-MS showed that for Malt 1 and Malt 2, Neutrase not influenced the violate compounds composition, whereas reduced their contents. This suggests that malt protein removal by Neutrase impairs the production of volatile compounds.
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Affiliation(s)
- Nan Xu
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd., Qingdao, China
| | - Fuhao Ma
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang, China
| | - Hua Yin
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd., Qingdao, China
| | - Wenwen Yu
- Department of Food Science and Engineering, Jinan University, Guangzhou City, Guangdong, China
| | - Cui Zhang
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewery Co. Ltd., Qingdao, China
| | - Shengnan Zhan
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang, China
| | - Tao Huang
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang, China
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Predicting the Glycemic Index of Biscuits Using Static In Vitro Digestion Protocols. Foods 2023; 12:foods12020404. [PMID: 36673499 PMCID: PMC9858452 DOI: 10.3390/foods12020404] [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: 11/04/2022] [Revised: 01/02/2023] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
In vitro digestion methods that can accurately predict the estimated GI (eGI) values of complex carbohydrate foods, including biscuits, are worth exploring. In the current study, standard commercial biscuits with varied clinical GI values between 9~30 were digested using both the INFOGEST and single-enzyme digestion protocols. The digestion kinetic parameters were acquired through mathematical fitting by mathematical kinetics models. The results showed that compared with the INFOGEST protocol, the AUR180 deduced from digesting using either porcine pancreatin or α-amylase showed the best potential in predicting the eGI values. Accordingly, mathematical equations were established based on the relations between the AUR180 and the GI values. When digesting using porcine pancreatin, GI= 1.834 + 0.009 ×AUCR180 (R2= 0.952), and when digesting using only α-amylase, GI= 6.101 + 0.009 ×AUCR180 (R2=0.902). The AUR180 represents the area under the curve of the reducing-sugar content normalized to the total carbohydrates versus the digestion time in 180 min. The in vitro method presented enabled the rapid and accurate prediction of the eGI values of biscuits, and the validity of the formula was verified by another batch of biscuits with a known GI, and the error rate of most samples was less than 30%.
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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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Screening methods for cereal grains with different starch components: A mini review. J Cereal Sci 2022. [DOI: 10.1016/j.jcs.2022.103557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang J, Li C, Wang G, Cao J, Yang X, Liu X, Sun L. α-Amylase inhibition of a certain dietary polyphenol is predominantly affected by the concentration of α-1, 4-glucosidic bonds in starchy and artificial substrates. Food Res Int 2022; 157:111210. [DOI: 10.1016/j.foodres.2022.111210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 11/04/2022]
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