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Ou Z, Chang S, Li S, Tan Y, Zhou Y, Pang X. Characterization of the key aroma compounds in different varieties of hops by application of the Sensomics approach. Food Chem 2024; 460:140448. [PMID: 39094342 DOI: 10.1016/j.foodchem.2024.140448] [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: 05/09/2024] [Revised: 06/21/2024] [Accepted: 07/11/2024] [Indexed: 08/04/2024]
Abstract
Aroma is a crucial indicator of hop quality. This study analyzed the differences in aroma compound composition among six hop varieties from three regions: North America, Europe, and Asia. Descriptive analysis and sensomic approaches including gas chromatography-olfactometry/aroma extract dilution analysis, odour activity value calculation and aroma recombination were used for the detailed characterization and comparative analysis of hop aroma. A total of 55 aroma-active compounds were identified. Among them, linalool, geraniol, β-myrcene, 2-undecanone, and methyl decanoate contributed significantly to hop aroma. Orthogonal partial least squares discriminant analysis revealed that, except for the SAAZ and XinYuan hops with some similarities in their aroma composition, the remaining hops exhibited unique aroma characteristics. A total of 16 compounds, including methyl 5-methylhexanoate and (E)-β-farnesene, were identified as differentiating aroma compounds in the six hop samples. This study enriches the knowledge on hop flavour with different origins and provides valuable insights into its application.
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Affiliation(s)
- Zejie Ou
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266001, People's Republic of China; College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Shiyu Chang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266001, People's Republic of China
| | - Shuchang Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266001, People's Republic of China
| | - Yanli Tan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266001, People's Republic of China
| | - Yuenan Zhou
- State Key Laboratory of Biological Fermentation Engineering of Beer, Tsingtao Brewing Ltd, Qingdao, 266061, People's Republic of China
| | - Xueli Pang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266001, People's Republic of China.
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2
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Eduardo da Silva K, Marcel Borges E, Crestani I, Dognini J, César de Jesus P. Cold extraction process for producing a low-alcohol beer, International Pale Lager style: Evaluation and description of flavors using electronic tongue. Food Res Int 2024; 190:114598. [PMID: 38945614 DOI: 10.1016/j.foodres.2024.114598] [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: 04/13/2024] [Revised: 06/01/2024] [Accepted: 06/03/2024] [Indexed: 07/02/2024]
Abstract
Grains germinate, dry, and then undergo crushing before being combined with hot water to yield a sweet and viscous liquid known as wort. To enhance flavor and aroma compounds while maintaining a lower alcohol content, cold water is utilized during wort production without increasing its density. Recent years have witnessed a surge in demand for beverages with reduced alcohol content, reflecting shifting consumer preferences towards healthier lifestyles. Notably, consumers of low-alcohol beers seek products that closely mimic traditional beers. In response, batches of low-alcohol beer were meticulously crafted using a cold extraction method with room temperature water, resulting in a beer with 1.11% alcohol by volume (ABV). Sensory evaluations yielded a favorable score of 27 out of 50, indicating adherence to style standards and absence of major technical flaws. Furthermore, electronic taste profiling revealed a striking similarity between the low-alcohol beer and the benchmark International Pale Lager style, exemplified by commercial beers (5 and 0.03% ABV). Notably, the reduced-alcohol variant boasted lower caloric content compared to both standard and non-alcoholic counterparts. Consequently, the cold extraction approach emerges as a promising technique for producing low-alcohol beers within the International Pale Lager style, catering to evolving consumer preferences and health-conscious trends.
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Affiliation(s)
- Kleiton Eduardo da Silva
- Departamento de Química, Fundação Universidade Regional de Blumenau, FURB, Campus 1, Rua Antônio da Veiga, 140, Victor Konder, 89012-900 Blumenau, SC, Brazil
| | - Endler Marcel Borges
- Departamento de Química, Fundação Universidade Regional de Blumenau, FURB, Campus 1, Rua Antônio da Veiga, 140, Victor Konder, 89012-900 Blumenau, SC, Brazil.
| | - Ileni Crestani
- Instituto de Tecnologia Ambiental do Senai, Rua São Paulo n° 1147 Victor Konder, 89012001 Blumenau, SC, Brazil
| | - Jocinei Dognini
- Instituto de Tecnologia Ambiental do Senai, Rua São Paulo n° 1147 Victor Konder, 89012001 Blumenau, SC, Brazil
| | - Paulo César de Jesus
- Departamento de Química, Fundação Universidade Regional de Blumenau, FURB, Campus 1, Rua Antônio da Veiga, 140, Victor Konder, 89012-900 Blumenau, SC, Brazil
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Beekwilder J, Schempp FM, Styles MQ, Zelder O. Microbial synthesis of terpenoids for human nutrition - an emerging field with high business potential. Curr Opin Biotechnol 2024; 87:103099. [PMID: 38447324 DOI: 10.1016/j.copbio.2024.103099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 03/08/2024]
Abstract
Because of their complicated biosynthesis and hydrophobic nature, fermentative production of terpenoids did not play a significant role on a commercial scale until a few years ago. Driven by technological progress in metabolic engineering and process biotechnology, terpene-based food ingredients such as flavors, sweeteners, and vitamins produced by fermentation have now become viable and commercially competitive options. In recent years, several companies have developed microbial platforms for commercial terpene production. Impressive progress has been made in the fermentative production of sesquiterpenes used in flavorings. The development of sweeteners, such as steviol glycosides and mogrosides, and the production of vitamins A and E based on fermentation are also being explored. The production of monoterpenes remains challenging due to their antimicrobial effects.
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Affiliation(s)
| | - Florence M Schempp
- BASF SE, Industrial Biotechnology I, RGD/BD - A30, 67056 Ludwigshafen, Germany
| | | | - Oskar Zelder
- BASF SE, Industrial Biotechnology I, RGD/BD - A30, 67056 Ludwigshafen, Germany.
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Klimczak K, Cioch-Skoneczny M, Duda-Chodak A. Effects of Dry-Hopping on Beer Chemistry and Sensory Properties-A Review. Molecules 2023; 28:6648. [PMID: 37764422 PMCID: PMC10534726 DOI: 10.3390/molecules28186648] [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: 08/23/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Dry-hopping is the addition of hops to the wort on the cold side of the brewing process. Unlike standard hop additions, its main purpose is not to produce a characteristic bitterness but to extract as much of the hop essential oils as possible, which are largely lost in the standard hopping process. When dry-hopped, it is possible to obtain a beer with an aroma that is difficult to achieve when hops are used on the hot side of the brewing process. As a result, this process has become very popular in recent years, particularly in beers that belong to the 'craft beer revolution' trend. In addition, the usefulness of this process is increasing with the development of new hop varieties with unique aromas. This article presents the main components of hops, focusing on those extracted during the process. Changes in the composition of beer bittering compounds and essential oils resulting from this process are discussed. This paper presents the current state of the knowledge on the factors affecting the degree of extraction, such as hop dosage, the time, and temperature of the process. Issues such as process-related physicochemical changes, hop creep, low flavor stability, haze formation, and green flavor are also discussed.
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Affiliation(s)
- Krystian Klimczak
- Department of Fermentation Technology and Microbiology, Faculty of Food Technology, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Kraków, Poland
| | - Monika Cioch-Skoneczny
- Department of Fermentation Technology and Microbiology, Faculty of Food Technology, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Kraków, Poland
| | - Aleksandra Duda-Chodak
- Department of Fermentation Technology and Microbiology, Faculty of Food Technology, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Kraków, Poland
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Lamberti L, Boffa L, Grillo G, Concari S, Cavani F, Cravotto G. Industrial Multiple-Effect Fractional Condensation under Vacuum for the Recovery of Hop Terpene Fractions in Water. Foods 2023; 12:foods12081716. [PMID: 37107511 PMCID: PMC10137393 DOI: 10.3390/foods12081716] [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: 03/10/2023] [Revised: 04/14/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The inflorescences of Humulus lupulus L. are the most valuable ingredient in the brewing industry. Only female cones are used as their bitterness and aroma, much associated with beer, are granted by the production of resins and essential oils, respectively. The traditional brewing process for the extraction of the organic volatiles in hops is called dry hopping. It consists of extended maceration at low temperature after the fermentation phase. New extraction technologies can improve extraction rates and product quality while saving time and money. This article proves that multiple-effect fractional condensation under a vacuum is suitable for flavouring applications and especially for performing dry hopping without contamination risks and reductions in hop amounts. This technique leads to the recovery of aqueous aromatic fractions that are very rich in hop sesquiterpenes and monoterpenes. These suspensions are extremely stable when stored at 5-8 °C and avoid degradation even after several months. This feature is crucial for the marketing of non-alcoholic beverages, where the dilution of essential oils is otherwise problematic.
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Affiliation(s)
- Lorenzo Lamberti
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10125 Turin, Italy
- Baladin S.S. Agricola, via Carrù 23, 12060 Piozzo, Italy
| | - Luisa Boffa
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10125 Turin, Italy
| | - Giorgio Grillo
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10125 Turin, Italy
| | - Stefano Concari
- Tropical Food Machinery, via Stradivari 17, 43011 Busseto, Italy
| | - Francesca Cavani
- Tropical Food Machinery, via Stradivari 17, 43011 Busseto, Italy
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10125 Turin, Italy
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Kumar A, Warburton A, Silcock P, Bremer PJ, Eyres GT. Yeast Strain Influences the Hop-Derived Sensory Properties and Volatile Composition of Beer. Foods 2023; 12:foods12051064. [PMID: 36900579 PMCID: PMC10000826 DOI: 10.3390/foods12051064] [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: 02/01/2023] [Revised: 02/23/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
The perception of hop-derived flavour in beer is not well understood, particularly regarding the effect that different yeast strains and fermentation parameters have on perceived hop aroma and the mechanisms responsible for these changes. To evaluate the influence of yeast strain on the sensory properties and volatile composition of beer, a standard wort, late-hopped with New Zealand Motueka hops (5 g·L-1), was fermented with one of twelve yeast strains under constant conditions (temperature and yeast inoculation rate). The bottled beers were evaluated using a free sorting sensory methodology, and their volatile organic compounds (VOC) were assessed using gas chromatography mass spectrometry (GC/MS) with headspace solid-phase microextraction (SPME) sampling. Beer fermented with SafLager W-34/70 yeast was associated with a hoppy flavour attribute, whereas WY1272 and OTA79 beers were sulfury, and WY1272 was also metallic. WB06 and WLP730 beers were perceived to be spicy, with WB06 beer also perceived as estery, whereas VIN13 beer was sour, and the WLP001 beer was astringent. Beers fermented using the twelve yeast strains had clearly distinct VOC profiles. Beer made with WLP730, OTA29, SPH, and WB06 yeasts had the highest 4-vinylguaiacol levels, which contributed to their spicy attribute. Beer made with W3470 had high levels of nerol, geraniol, and citronellol, which supported its sensory characterisation as being 'hoppy'. This research has illustrated the important role that yeast strain has on modulating hop flavour in beer.
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Agorastos G, Klosse B, Hoekstra A, Meuffels M, Welzen J, Halsema VE, Bast A, Klosse P. Instrumental classification of beer based on mouthfeel. Int J Gastron Food Sci 2023. [DOI: 10.1016/j.ijgfs.2023.100697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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8
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Han X, Qin Q, Li C, Zhao X, Song F, An M, Chen Y, Wang X, Huang W, Zhan J, You Y. Application of non-Saccharomyces yeasts with high β-glucosidase activity to enhance terpene-related floral flavor in craft beer. Food Chem 2023; 404:134726. [DOI: 10.1016/j.foodchem.2022.134726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
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Siesto G, Pietrafesa R, Tufariello M, Gerardi C, Grieco F, Capece A. Application of microbial cross-over for the production of Italian grape ale (IGA), a fruit beer obtained by grape must addition. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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10
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Williams C, Stander MA, Medvedovici A, Buica A. Volatile Terpenoid Profiling in Gin and Beer – A Targeted Approach. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Chen DQ, Zou C, Huang YB, Zhu X, Contursi P, Yin JF, Xu YQ. Adding functional properties to beer with jasmine tea extract. Front Nutr 2023; 10:1109109. [PMID: 36937349 PMCID: PMC10020177 DOI: 10.3389/fnut.2023.1109109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Accepted: 02/13/2023] [Indexed: 03/06/2023] Open
Abstract
Hops provide the characteristic bitter taste and attractive aroma to beer; in this study, hops were replaced by jasmine tea extract (JTE) during late-hopping. The addition of JTE improved the beer foam stability 1.52-fold, and increased the polyphenol and organic acid contents. Linalool was the most important aroma compound in hopped (HOPB) and jasmine tea beer (JTB), but other flavor components were markedly different, including dimeric catechins, flavone/flavonol glycosides, and bitter acids and derivatives. Sensory evaluation indicated that addition of JTE increased the floral and fresh-scent aromas, reduced bitterness and improved the organoleptic quality of the beer. The antioxidant capacity of JTB was much higher than that of HOPB. The inhibition of amylase activity by JTB was 30.5% higher than that of HOPB. Functional properties to beer were added by substituting jasmine tea extract for hops during late hopping.
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Affiliation(s)
- De-Quan Chen
- Tea Research Institute Chinese Academy of Agricultural Sciences, National Engineering Research Center for Tea Processing, Key Laboratory of Tea Biology and Resources Utilization, Hangzhou, China
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Chun Zou
- Tea Research Institute Chinese Academy of Agricultural Sciences, National Engineering Research Center for Tea Processing, Key Laboratory of Tea Biology and Resources Utilization, Hangzhou, China
- Chun Zou
| | - Yi-Bin Huang
- Tea Research Institute Chinese Academy of Agricultural Sciences, National Engineering Research Center for Tea Processing, Key Laboratory of Tea Biology and Resources Utilization, Hangzhou, China
- College of Tea Science, Guizhou University, Guiyang, China
| | - Xuan Zhu
- School of Food and Bioengineering, Zhejiang Gongshang University, Hangzhou, China
| | - Patrizia Contursi
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Jun-Feng Yin
- Tea Research Institute Chinese Academy of Agricultural Sciences, National Engineering Research Center for Tea Processing, Key Laboratory of Tea Biology and Resources Utilization, Hangzhou, China
| | - Yong-Quan Xu
- Tea Research Institute Chinese Academy of Agricultural Sciences, National Engineering Research Center for Tea Processing, Key Laboratory of Tea Biology and Resources Utilization, Hangzhou, China
- *Correspondence: Yong-Quan Xu
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12
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Genetic variations associated with the soapy flavor perception in Gorgonzola PDO cheese. Food Qual Prefer 2022. [DOI: 10.1016/j.foodqual.2022.104569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Dietz C, Yang Q, Ford R. The impact of time standardising TCATA by modality data on the multisensory profile of beer. Food Qual Prefer 2022. [DOI: 10.1016/j.foodqual.2021.104506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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A TCATA by modality approach to study the multisensory temporal profile of hop bitter and flavour products applied in lager. Food Qual Prefer 2022. [DOI: 10.1016/j.foodqual.2021.104470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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