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Abouelenein D, Acquaticci L, Alessandroni L, Borsetta G, Caprioli G, Mannozzi C, Marconi R, Piatti D, Santanatoglia A, Sagratini G, Vittori S, Mustafa AM. Volatile Profile of Strawberry Fruits and Influence of Different Drying Methods on Their Aroma and Flavor: A Review. Molecules 2023; 28:5810. [PMID: 37570780 PMCID: PMC10420878 DOI: 10.3390/molecules28155810] [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: 05/19/2023] [Revised: 07/20/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Strawberries are the most popular berry fruit in the world, due to their distinctive aroma, flavor, and known health properties. Because volatile substances play a large role in strawberry flavor, even little alterations can have a big impact on how the fruit tastes. Strawberries are thought to have a complex aroma. Fresh strawberry fruits contain more than 360 volatile compounds, including esters, furans, terpenes, alcohols, aldehydes, ketones, and sulfur compounds. Despite having far lower concentrations than esters, terpenoids, furanones, and sulfur compounds, all have a considerable impact on how people perceive the aroma of strawberries. With a focus on the active aroma components and the many analytical methods used to identify them, including gas chromatography, electronic nose sensing, and proton-transfer- reaction mass spectrometry, the present review's aim was to provide a summary of the relevant literature. Additionally, strawberry fruits are frequently dried to create a powder in order to increase their shelf life. Consequently, the impact of various drying techniques on strawberries' volatile profile was investigated in the current review. This review can be considered a good reference for research concerning the aroma profile of strawberries. It helps to better understand the complex aroma and flavor of strawberries and provides a guide for the effects of drying processing.
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Affiliation(s)
- Doaa Abouelenein
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Laura Acquaticci
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Laura Alessandroni
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Germana Borsetta
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Giovanni Caprioli
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Cinzia Mannozzi
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Riccardo Marconi
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Diletta Piatti
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Agnese Santanatoglia
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Gianni Sagratini
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Sauro Vittori
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
| | - Ahmed M. Mustafa
- CHemistry Interdisciplinary Project (CHIP), School of Pharmacy, University of Camerino, Via Madonna delle Carceri, 62032 Camerino, Italy; (D.A.); (L.A.); (L.A.); (G.B.); (G.C.); (C.M.); (R.M.); (D.P.); (A.S.); (G.S.); (A.M.M.)
- Department of Pharmacognosy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
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Passa K, Simal C, Tsormpatsidis E, Papasotiropoulos V, Lamari FN. Monitoring of Volatile Organic Compounds in Strawberry Genotypes over the Harvest Period. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091881. [PMID: 37176939 PMCID: PMC10181119 DOI: 10.3390/plants12091881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/02/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023]
Abstract
Volatile Organic Compounds (VOCs) over the harvest period have been assessed in twenty-five strawberry genotypes cultivated in western Greece. Using liquid-liquid extraction and gas chromatography-mass spectrometry (GC--MS), twenty-eight volatiles were monitored at early (T1) and mid-harvest (T3) time points to investigate the effect of the genotype and harvest time on strawberry volatilome. A quantitative impact of both harvest date and genotype on VOCs associated with aroma was demonstrated, with the most significant VOCs being terpenes, esters, and acids, followed by lactones and furanones. Harvest date was crucial for terpenoid and phenylpropanoid content, and important for esters, short-chain acids, and lactones. Six out of the twenty-five genotypes (four commercial varieties, including 'Rociera', 'Victory', 'Leyre', and 'Inspire', and two advanced selection genotypes (G2 and G8) were evaluated at two additional time points, covering the entire harvest season. The volatile levels were higher in fruits harvested at early stages (T1-T2) for most of the genotypes examined. The G2 genotype turned out to have a less ample but more stable volatile profile throughout harvesting, while 'Victory', 'Leyre', and 'Inspire' exhibited less abrupt changes than 'Rociera'. This study demonstrates that the determination of VOCs provides significant information regarding the differences in strawberry genotypes related to aroma and enables the selection of genotypes based on specific VOCs content and/or volatile stability over the harvest period. Furthermore, this study pinpoints that growers could opt for optimal harvest dates based on the genotypes and the VOC content.
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Affiliation(s)
- Kondylia Passa
- Laboratory of Agricultural Genetics & Plant Breeding, Department of Agriculture, University of Patras, 30200 Messolonghi, Greece
| | - Carmen Simal
- Laboratory of Pharmacognosy & Chemistry of Natural Products, Department of Pharmacy, University of Patras, 26504 Patras, Greece
| | | | - Vasileios Papasotiropoulos
- Laboratory of Agricultural Genetics & Plant Breeding, Department of Agriculture, University of Patras, 30200 Messolonghi, Greece
| | - Fotini N Lamari
- Laboratory of Pharmacognosy & Chemistry of Natural Products, Department of Pharmacy, University of Patras, 26504 Patras, Greece
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Yang M, Hou G, Peng Y, Wang L, Liu X, Jiang Y, He C, She M, Zhao M, Chen Q, Li M, Zhang Y, Lin Y, Zhang Y, Wang Y, He W, Wang X, Tang H, Luo Y. FaGAPC2/FaPKc2.2 and FaPEPCK reveal differential citric acid metabolism regulation in late development of strawberry fruit. FRONTIERS IN PLANT SCIENCE 2023; 14:1138865. [PMID: 37082348 PMCID: PMC10110876 DOI: 10.3389/fpls.2023.1138865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 02/28/2023] [Indexed: 05/03/2023]
Abstract
Citric acid is the primary organic acid that affects the taste of strawberry fruit. Glycolysis supplies key substrates for the tricarboxylic acid cycle (TCA cycle). However, little is known about the regulatory mechanisms of glycolytic genes on citric acid metabolism in strawberry fruits. In this study, the citric acid content of strawberry fruit displayed a trend of rising and decreasing from the initial red stage to the full red stage and then dark red stage. Thus, a difference in citric acid metabolic regulation was suspected during strawberry fruit development. In addition, overexpression of either cytoplasm glyceraldehyde-3-phosphate dehydrogenase (FxaC_14g13400, namely FaGAPC2) or pyruvate kinase (FxaC_15g00080, namely FaPKc2.2) inhibited strawberry fruit ripening and the accumulation of citric acid, leading to a range of maturity stages from partial red to full red stage. The combined transcriptome and metabolome analysis revealed that overexpression of FaGAPC2 and FaPKc2.2 significantly suppressed the expression of phosphoenolpyruvate carboxykinase (FxaC_1g21491, namely FaPEPCK) but enhanced the content of glutamine and aspartic acid. Meanwhile, the activities of PEPCK and glutamate decarboxylase (GAD) were inhibited, but the activities of glutamine synthase (GS) were increased in FaGAPC2/FaPKc2.2-overexpressed fruit. Further, functional verification demonstrated that overexpression of FaPEPCK can promote strawberry fruit ripening, resulting in a range of maturity stage from full red to dark red stage, while the citric acid synthase (CS) activities and citric acid content were significantly decreased. Overall, this study revealed that FaGAPC2/FaPKc2.2 and FaPEPCK perform an important role in reducing citric acid content in strawberry fruit, and FaGAPC2/FaPKc2.2 mainly by promoting the GS degradation pathway and FaPEPCK mainly by inhibiting the CS synthesis pathway.
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Affiliation(s)
- Min Yang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - GouYan Hou
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - YuTing Peng
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - LiangXin Wang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - XiaoYang Liu
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - YuYan Jiang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - CaiXia He
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - MuSha She
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - ManTong Zhao
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Qing Chen
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Mengyao Li
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yong Zhang
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
| | - Yuanxiu Lin
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Yunting Zhang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Yan Wang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Wen He
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Xiaorong Wang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Haoru Tang
- Institute of Olericulture and Pomology, Sichuan Agricultural University, Chengdu, China
| | - Ya Luo
- College of Horticulture, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Ya Luo,
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Biochemical, Sensory, and Molecular Evaluation of Flavour and Consumer Acceptability in Australian Papaya (Carica papaya L.) Varieties. Int J Mol Sci 2022; 23:ijms23116313. [PMID: 35682992 PMCID: PMC9181177 DOI: 10.3390/ijms23116313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 05/27/2022] [Accepted: 06/03/2022] [Indexed: 12/04/2022] Open
Abstract
Inconsistency in flavour is one of the major challenges to the Australian papaya industry. However, objectively measurable standards of the compound profiles that provide preferable taste and aroma, together with consumer acceptability, have not been set. In this study, three red-flesh papayas (i.e., ‘RB1’, ‘RB4’, and ‘Skybury’) and two yellow-flesh papayas (i.e., ‘1B’ and ‘H13’) were presented to a trained sensory panel and a consumer panel to assess sensory profiles and liking. The papaya samples were also examined for sugar components, total soluble solids, and 14 selected volatile compounds. Additionally, the expression patterns of 10 genes related to sweetness and volatile metabolism were assessed. In general, red papaya varieties had higher sugar content and tasted sweeter than yellow varieties, while yellow varieties had higher concentrations of citrus floral aroma volatiles and higher aroma intensity. Higher concentrations of glucose, linalool oxide, and terpinolene were significantly associated with decreased consumer liking. Significant differences were observed in the expression profiles of all the genes assessed among the selected papaya varieties. Of these, cpGPT2 and cpBGLU31 were positively correlated to glucose production and were expressed significantly higher in ‘1B’ than in ‘RB1’ or ‘Skybury’. These findings will assist in the strategic selective breeding for papaya to better match consumer and, hence, market demand.
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Production of Hydroxy Fatty Acids, Precursors of γ-Hexalactone, Contributes to the Characteristic Sweet Aroma of Beef. Metabolites 2022; 12:metabo12040332. [PMID: 35448519 PMCID: PMC9028887 DOI: 10.3390/metabo12040332] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 02/07/2023] Open
Abstract
Aroma is an essential factor for meat quality. The meat of Japanese Black cattle exhibits fine marbling and a rich and sweet aroma with a characteristic lactone composition. The mechanism of lactone formation associated with beef aroma has not been elucidated. In this study, we examined the precursors of γ-hexalactone, an indicator of the sweet aroma of beef and identified the mechanism underlying γ-hexalactone production. A low-temperature vacuum system was used to prepare beef tallow from Japanese Black cattle and Holstein cattle. The odor components were identified using headspace–gas chromatography. The analysis revealed that γ-hexalactone, γ-dodecalactone, δ-tetradecalactone, and δ-hexadecalactone were present as sweet aroma components of beef tallow prepared from marbling and muscle. Since we previously reported that γ-hexalactone formation correlates with linoleic acid content in beef, we analyzed ten oxidized fatty acids derived from linoleic acid by liquid chromatography–triple quadrupole mass spectrometry and detected two hydroxy-octadecadienoic acids (9S-HODE and 13S-HODE) in beef tallow. Significant differences in arachidonic acid 15-lipoxygenase and cyclooxygenase protein expression levels among subcutaneous fat, intramuscular fat, and muscle tissue were observed. Our results suggest that the combination of linoleic acid and the expression of lipid oxidase derived from beef muscle and intramuscular fat produce hydroxy fatty acids that result in a sweet aroma.
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