1
|
Zhang S, Page-Zoerkler N, Genevaz A, Roubaty C, Pollien P, Bordeaux M, Mestdagh F, Moccand C. Unlocking the Aromatic Potential of Native Coffee Yeasts: From Isolation to a Biovolatile Platform. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:4665-4674. [PMID: 36916533 PMCID: PMC10037330 DOI: 10.1021/acs.jafc.2c08263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Postharvest processing of coffee has been shown to impact cup quality. Yeasts are known to modulate the sensory traits of the final cup of coffee after controlled fermentation at the farm. Here, we enumerated native coffee yeasts in a Nicaraguan farm during dry and semidry postharvest processing of Arabica and Robusta beans. Subsequently, 90 endogenous yeast strains were selected from the collected endogenous isolates, identified, and subjected to high-throughput fermentation and biovolatile generation in a model system mimicking postharvesting conditions. Untargeted volatile analysis by SPME-GC-MS enabled the identification of key aroma compounds generated by the yeast pool and demonstrated differences among strains. Several genera, including Pichia, Candida, and Hanseniaspora, showed both strain- and species-level variability in volatile generation and profiles. This fermentation platform and biovolatile database could represent a versatile opportunity to accelerate the development of yeast starter cultures for generating specific and desired sensory attributes in the final cup of coffee.
Collapse
Affiliation(s)
| | | | - Aliénor Genevaz
- Nestlé
Research, Vers-Chez-Les-Blanc, 1000 Lausanne 26, Switzerland
| | - Claudia Roubaty
- Nestlé
Research, Vers-Chez-Les-Blanc, 1000 Lausanne 26, Switzerland
| | - Philippe Pollien
- Nestlé
Research, Vers-Chez-Les-Blanc, 1000 Lausanne 26, Switzerland
| | | | - Frederic Mestdagh
- Nestlé
Nespresso S.A., Route
de Lausanne 2, 1680 Romont, Switzerland
| | - Cyril Moccand
- Nestlé
Research, Vers-Chez-Les-Blanc, 1000 Lausanne 26, Switzerland
| |
Collapse
|
2
|
Mutz YS, do Rosario D, Galvan D, Schwan RF, Bernardes PC, Conte-Junior CA. Feasibility of NIR spectroscopy coupled with chemometrics for classification of Brazilian specialty coffee. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
|
3
|
Gonçalves Bravim D, Mota de Oliveira T, Kaic Alves do Rosário D, Nara Batista N, Freitas Schwan R, Moreira Coelho J, Campos Bernardes P. Inoculation of yeast and bacterium in wet-processed coffea canephora. Food Chem 2022; 400:134107. [DOI: 10.1016/j.foodchem.2022.134107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 11/26/2022]
|
4
|
Martins PMM, Batista NN, Santos LD, Dias DR, Schwan RF. Microencapsulation of epiphytic coffee yeasts by spray drying using different wall materials: Implementation in coffee medium. Int J Food Microbiol 2022; 379:109839. [PMID: 35868147 DOI: 10.1016/j.ijfoodmicro.2022.109839] [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: 05/18/2022] [Revised: 06/30/2022] [Accepted: 07/13/2022] [Indexed: 11/30/2022]
Abstract
The storage of microorganisms in liquid form is the main drawback of commercializing epiphytic coffee yeasts. This work aimed to evaluate the fermentative performance of microencapsulated yeasts by spray drying in a coffee peel and pulp media (CPM). The yeasts, Saccharomyces cerevisiae CCMA 0543, Torulaspora delbrueckii CCMA 0684, and Meyerozyma caribbica CCMA 1738, were microencapsulated using maltodextrin DE10 (MD), high maltose (MA), and whey powder (WP) as wall materials. A Central Composite Rotational Design (CCRD) was used to investigate the effect of operating parameters on the microcapsules' cell viability, drying yield, and water activity. Yeasts reached cell viability and drying yields above 90 and 50 %, respectively. WP maintained the cell viability of the three yeasts over 90 days of storage at room temperature (25 °C) and was selected as a wall material for the three yeasts. M. caribbica showed to be more sensitive to spray drying and less resistant to storage. Some differences were found in the fermentation of the CPM medium, but the microencapsulated yeasts maintained their biotechnological characteristics. Therefore, the microencapsulation of epiphytic coffee yeasts by spray drying was promising to be used in the coffee fermentation process.
Collapse
Affiliation(s)
| | - Nádia Nara Batista
- Biology Department, Federal University of Lavras, CEP 37200-900 Lavras, MG, Brazil
| | - Líbia Diniz Santos
- Federal University of Uberlândia, Faculty of Chemical Engineering, 290, CEP 38700-103 Patos de Minas, MG, Brazil
| | - Disney Ribeiro Dias
- Food Sciences Department, Federal University of Lavras, CEP 37200-900 Lavras, MG, Brazil
| | | |
Collapse
|
5
|
A Systematic Mapping Study of Coffee Quality throughout the Production-to-Consumer Chain. J FOOD QUALITY 2022. [DOI: 10.1155/2022/8019251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Coffee is one of the most consumed beverages in the world and is crucial in the economy of many developing countries. The search to improve coffee quality comes from many fronts, as do the many ways to measure quality and the factors that affect it. Several techniques are used to measure the different metrics to assess coffee quality, across different types of coffee samples and species, and throughout the entire process from farm to cup. In this work, we conducted a systematic mapping study of 1,470 articles to identify the aspects of quality that are the most important in the scientific literature to evaluate coffee throughout the processing chain. The study revealed that cup quality and biochemical composition are the most researched quality attributes. The main objective of the reviewed studies is the correlation between different quality measurements. The most used techniques are the analytical chemistry methods. The most studied species is Coffea arabica. The most used sample presentation is green coffee. The postharvest stage is the most researched, in which quality control receives more attention. In the preharvest stage, management practices stand out. Finally, the most used type of research was the evaluation research.
Collapse
|
6
|
Machado JL, Tomaz MA, da Luz JMR, Osório VM, Costa AV, Colodetti TV, Debona DG, Pereira LL. Evaluation of genetic divergence of coffee genotypes using the volatile compounds and sensory attributes profile. J Food Sci 2021; 87:383-395. [PMID: 34907528 DOI: 10.1111/1750-3841.15986] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/09/2021] [Accepted: 10/25/2021] [Indexed: 12/30/2022]
Abstract
The quality of the coffee beverage is related to the chemical, physical, and sensory attributes of the coffee beans that vary with the geographic location of the crop, genetic factors, and post-harvest processing. So, the objective of this study was to evaluate the genetic divergence of 27 genotypes of Coffea canephora using the volatile compounds and sensory attributes profile to select genotypes that produce a coffee beverage with high sensory quality. This genetic diversity was estimated from the Euclidean distance matrix using non-standard data and the Unweighted Pair-Group Method Using Arithmetic Averages (UPGMA). The 2-furyl-methanol, 4-ethenyl-2-methoxyphenol, furfural, 5-methylfurfural, methylpyrazine, and 2,6-dimethylpyrazine were predominating volatile compounds in the genotypes. The sensory attributes had a positive Pearson's correlation with the total score. The volatile compounds had a different relative contribution to the genetic divergence between the genotypes of C. canephora. The 4-ethenyl-2-methoxyphenol, 2-furyl-methanol, and furfural were volatile compounds that most contributed to the formation of the groups in the UPGMA dendrogram. The relative contribution of sensory attributes to dissimilarity among genotypes was 6.42% to 20.20%. Therefore, this study verified the relative contribution of volatile compounds, in specially 4-ethenyl-2-methoxyphenol, 2-furyl-methanol, and furfural, and sensory attributes (flavor, mouthfeel, and bitterness/sweetness) to the genetic divergence between the genotypes of the three clonal varieties. Thus, this work points out compounds that positively contribute to the sensory quality of the Conilon coffee beverage.
Collapse
Affiliation(s)
- Jéssica Louzada Machado
- Graduate Program in Agrochemistry, Federal University of Espírito Santo/UFES, Alegre, Espírito Santo, Brazil
| | - Marcelo Antonio Tomaz
- Agronomy Department, Federal University of Espírito Santo/UFES, Alegre, Espírito Santo, Brazil
| | | | - Vanessa Moreira Osório
- Chemistry and Physical Department, Federal University of Espírito Santo/UFES, Alegre, Espírito Santo, Brazil
| | - Adilson Vidal Costa
- Chemistry and Physical Department, Federal University of Espírito Santo/UFES, Alegre, Espírito Santo, Brazil
| | | | - Danieli Grancieri Debona
- Department of Coffee Research Analysis Laboratory, Federal Institute of Espírito Santo, Venda Nova do Imigrante, Espírito Santo, Brazil
| | - Lucas Louzada Pereira
- Department of Coffee Research Analysis Laboratory, Federal Institute of Espírito Santo, Venda Nova do Imigrante, Espírito Santo, Brazil
| |
Collapse
|
7
|
da Silva Oliveira EC, da Luz JMR, de Castro MG, Filgueiras PR, Guarçoni RC, de Castro EVR, da Silva MDCS, Pereira LL. Chemical and sensory discrimination of coffee: impacts of the planting altitude and fermentation. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03912-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
8
|
From Plantation to Cup: Changes in Bioactive Compounds during Coffee Processing. Foods 2021; 10:foods10112827. [PMID: 34829108 PMCID: PMC8620865 DOI: 10.3390/foods10112827] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 11/17/2022] Open
Abstract
Coffee is consumed not just for its flavor, but also for its health advantages. The quality of coffee beverages is affected by a number of elements and a series of processes, including: the environment, cultivation, post-harvest, fermentation, storage, roasting, and brewing to produce a cup of coffee. The chemical components of coffee beans alter throughout this procedure. The purpose of this article is to present information about changes in chemical components and bioactive compounds in coffee during preharvest and postharvest. The selection of the appropriate cherry maturity level is the first step in the coffee manufacturing process. The coffee cherry has specific flavor-precursor components and other chemical components that become raw materials in the fermentation process. During the fermentation process, there are not many changes in the phenolic or other bioactive components of coffee. Metabolites fermented by microbes diffuse into the seeds, which improves their quality. A germination process occurs during wet processing, which increases the quantity of amino acids, while the dry process induces an increase in non-protein amino acid γ-aminobutyric acid (GABA). In the roasting process, there is a change in the aroma precursors from the phenolic compounds, especially chlorogenic acid, amino acids, and sugars found in coffee beans, to produce a distinctive coffee taste.
Collapse
|