Abstract
The aim of this study is the enrichment of green table olives with anthocyanins by using beetroot and black carrot in the fermentation media and to improve functional properties of fermented olives. For this purpose, a full factorial design was constructed by considering the fermentation time, vegetable type and vegetable concentration as processing factors. The changes in the chemical and microbiological properties of both olive and brine samples were monitored. During fermentation, while phenolic components of olives were transferred to the brine, the anthocyanins originating from the black carrot and beetroot diffused into both olive and brine samples. The total monomeric anthocyanin content of fermented olives containing 20% percent of black carrot and beetroot was 149.87 and 154.05 mg/kg respectively. Moreover, the color of olives turned as fermentation progressed. Both ANOVA results (p < 0.05) and PCA model (R2 = 0.99; Q2 = 0.93) confirmed that reaction time is most important factor for the fermentation process. The sensorial analysis results indicated that the olives fermented with 20% vegetable for 10 days had been highly scored by panelists.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs13197-023-05751-x/MediaObjects/13197_2023_5751_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs13197-023-05751-x/MediaObjects/13197_2023_5751_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs13197-023-05751-x/MediaObjects/13197_2023_5751_Fig3_HTML.png)
Similar content being viewed by others
Availability of data and materials
All data generated or analyzed during this study are included in this published article (and its supplementary information files).
Code availability
Not applicable.
Abbreviations
- TPC:
-
Total phenolic content
- TMA:
-
Total monomeric anthocyanin content
- TAC:
-
Total antioxidant capacity
- SC:
-
Salt content
- TA:
-
Total acidity
- TBC:
-
Total viable bacteria count
- TYMC:
-
Total yeast and mold count
- BT:
-
Beetroot
- BC:
-
Black carrot
- PCA:
-
Principal component analysis
References
Akbas E, Kilercioglu M, Onder ON, Koker A, Soyler B, Oztop MH (2017) Wheatgrass juice to wheat grass powder: Encapsulation, physical and chemical characterization. J Func Foods 28:19–27
Aktas AB, Ozen B, Tokatli F, Sen I (2014) Phenolics profile of a naturally debittering olive in comparison to regular olive varieties. J Sci Food Agri 94(4):691–698
Amanpour A, Kelebek H, Selli S (2019) Characterization of aroma, aroma-active compounds and fatty acids profiles of cv. Nizip Yaglik oils as affected by three maturity periods of olives. J Sci Food Agri 99(2):726–740
Anagnostopoulos DA, Goulas V, Xenofontos E, Vouras C, Nikoloudakis N, Tsaltas D (2020) Benefits of the use of lactic acid bacteria starter in green cracked cypriot table olives fermentation. Foods 9(1):17
Aprile A, Negro C, Sabella E, Luvisi A, Nicolì F, Nutricati E, De Bellis L (2019) Antioxidant activity and anthocyanin contents in olives (cv cellina di nardò) during ripening and after fermentation. Antioxid 8(5):138
Bautista-Gallego J, Rantsiou K, Garrido-Fernández A, Cocolin L, Arroyo-López FN (2013) Salt reduction in vegetable fermentation: reality or desire? J Food Sci 78(8):R1095–R1100
Blana VA, Grounta A, Tassou CC, Nychas GJE, Panagou EZ (2014) Inoculated fermentation of green olives with potential probiotic Lactobacillus pentosus and Lactobacillus plantarum starter cultures isolated from industrially fermented olives. Food Microbiol 38:208–218
Blekas G, Vassilakis C, Harizanis C, Tsimidou M, Boskou DG (2002) Biophenols in table olives. J Agri Food Chem 50(13):3688–3692
Caponio F, Difonzo G, Calasso M, Cosmai L, De Angelis M (2019) Effects of olive leaf extract addition on fermentative and oxidative processes of table olives and their nutritional properties. Food Res Int 116:1306–1317
Cemeroglu B (2010) Gıda Analizleri Genişletilmiş 2. Baskı. Gıda Teknolojisi Derneği Yayınları. Ankara
Durante M, Tufariello M, Tommasi L, Lenucci MS, Bleve G, Mita G (2018) Evaluation of bioactive compounds in black table olives fermented with selected microbial starters. J Sci Food Agri 98(1):96–10
Erbay B, Kucuksayan S, Kucukoner E (2010) Renklendirilmiş fermente “Memecik” çeşidi zeytinlerin fiziksel, kimyasal ve duyusal özellikleri. Akademik Gıda 8(6):13–18
Gallardo-Guerrero L, Gandul-Rojas B, Moreno-Baquero JM, López-López A, Bautista-Gallego J, Garrido-Fernández A (2013) Pigment, physicochemical, and microbiological changes related to the freshness of cracked table olives. J Agri Food Chem 61(15):3737–3747
Gandul-Rojas B, Gallardo-Guerrero L (2018) Pigment changes during preservation of green table olive specialities treated with alkali and without fermentation: effect of thermal treatments and storage conditions. Food Res Int 108:57–67
García-Serrano P, de Los SB, Sánchez AH, Romero C, Aguado A, García-García P, Brenes M (2020) Progress on green table olive processing with KOH and wastewaters reuse for agricultural purposes. Sci Total Environ 746:141150
Golomb BL, Morales V, Jung A, Yau B, Boundy-Mills KL, Marco ML (2013) Effects of pectinolytic yeast on the microbial composition and spoilage of olive fermentations. Food Microbiol 33(1):97–106
Halkman AK (2005) Merck gıda mikrobiyolojisi uygulamaları. Başak Matbaacılık, Ankara
IOOC (2004) Trade standards applying to table olives. Document COI/OT/NC No. 1. https://www.internationaloliveoil.org/wp-content/uploads/2019/11/COI-OT-NC1-2004-Eng.pdf. Accesed 10 May 2022
Karaoglan HA, Keklik NM, Isikli ND (2019) Degradation kinetics of anthocyanin and physicochemical changes in fermented turnip juice exposed to pulsed UV light. J Food Sci Technol 56(1):30–39
Khosravi H, Saedi SI, Rezaei M (2021) Real-time recognition of on-branch olive ripening stages by a deep convolutional neural network. Sci Hortic 287:110252
Kiai H, Hafidi A (2014) Chemical composition changes in four green olive cultivars during spontaneous fermentation. LWT-Food Sci Technol 57(2):663–670
Kiai H, Raiti J, El Abbassi A, Hafidi A (2020) Chemical profiles of Moroccan Picholine olives and its brines during spontaneous fermentation. Int J Fruit Sci 20(3):S1297–S1312
Malheiro R, Sousa A, Casal S, Bento A, Pereira JA (2011) Cultivar effect on the phenolic composition and antioxidant potential of stoned table olives. Food Chem Toxicol 49(2):450–457
Nielsen SS (2017) Food analysis laboratory manual. Springer, Berlin
Othman NB, Roblain D, Chammen N, Thonart P, Hamdi M (2009) Antioxidant phenolic compounds loss during the fermentation of Chétoui olives. Food Chem 116(3):662–669
Pereira JA, Pereira APG, Ferreira ICFR, Valentão P, Andrade PB, Seabra R, Estevinho L, Bento A (2006) Table olives from Portugal: phenolic compounds, antioxidant potential, and antimicrobial activity. J Agri Food Chem 54(22):8425–8431
Perpetuini G, Prete R, Garcia-Gonzalez N, Khairul Alam M, Corsetti A (2020) Table olives more than a fermented food. Foods 9(2):178
Pino A, Vaccalluzzo A, Solieri L, Romeo FV, Todaro A, Caggia C, Arroyo-Lopez FN, Bautista-Gallego J, Randazzo C (2019) Effect of sequential inoculum of beta-glucosidase positive and probiotic strains on brine fermentation to obtain low salt Sicilian table olives. Front Microbiol 10:174
Ramírez E, Gandul-Rojas B, Romero C, Brenes M, Gallardo-Guerrero L (2015) Composition of pigments and colour changes in green table olives related to processing type. Food Chem 166:115–124
Ramírez E, Brenes M, de Castro A, Romero C, Medina E (2017) Oleuropein hydrolysis by lactic acid bacteria in natural green olives. LWT-Food Sci Technol 78:165–171
Rocha J, Borges N, Pinho O (2020) Table olives and health: a review. J Nutr Sci 9:e57
Rodrigues N, Marx IM, Dias LG, Veloso AC, Pereira JA, Peres AM (2019) Monitoring the debittering of traditional stoned green table olives during the aqueous washing process using an electronic tongue. LWT-Food Sci Technol 109:327–335
Rodríguez-Gómez F, Ruiz-Bellido MA, Romero-Gil V, Benítez-Cabello A, Garrido-Fernández A, Arroyo-López FN (2017) Microbiological and physicochemical changes in natural green heat-shocked Aloreña de Málaga table olives. Front Microbiol 8:2209
Talhaoui N, Taamalli A, Gómez-Caravaca AM, Fernández-Gutiérrez A, Segura-Carretero A (2015) Phenolic compounds in olive leaves: analytical determination, biotic and abiotic influence, and health benefits. Food Res Int 77:92–108
Tofalo R, Schirone M, Perpetuini G, Angelozzi G, Suzzi G, Corsetti A (2012) Microbiological and chemical profiles of naturally fermented table olives and brines from different Italian cultivars. Antonie Van Leeuwenhoek 102(1):121–131
Acknowledgements
This research was founded by grants from Sivas Cumhuriyet University Scientific Research Projects (CUBAP) Program (Project No: M-2021-813).
Funding
The funding was received from the Sivas Cumhuriyet University Scientific Research Projects (CUBAP) Program (Ayse Burcu Aktas- as project manager and Zelal Ardic- as project assistant) (Project No: M-2021-813).
Author information
Authors and Affiliations
Contributions
ZA: lab scale production and analysis, methodology, acquisition of data, formal analysis. ABA: conception and design of the study, project administration, methodology, acquisition of data, formal analysis, supervision, writing—review & editing.
Corresponding author
Ethics declarations
Conflict of interest
The authors declare no conflict of interest.
Consent to participate
Not applicable.
Consent for publication
All authors agree to publish this draft.
Ethics approval
This study does not involve any human or animal testing.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Supplementary Information
Below is the link to the electronic supplementary material.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Ardic, Z., Aktas, A.B. Enrichment of green table olives by natural anthocyanins during fermentation. J Food Sci Technol 60, 2244–2254 (2023). https://doi.org/10.1007/s13197-023-05751-x
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13197-023-05751-x