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Use of Refractance Window Drying as an Alternative Method for Processing the Microalga Spirulina platensis. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020720. [PMID: 36677778 PMCID: PMC9863420 DOI: 10.3390/molecules28020720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/31/2022] [Accepted: 01/02/2023] [Indexed: 01/12/2023]
Abstract
Microalgae such as Spirulina platensis have recently attracted the interest of the pharmaceutical, nutritional and food industries due to their high levels of proteins and bioactive compounds. In this study, we investigated the use of refractance window (RW) drying as an alternative technology for processing the microalga Spirulina biomass aiming at its dehydration. In addition, we also analyzed the effects of operating variables (i.e., time and temperature) on the quality of the final product, expressed by the content of bioactive compounds (i.e., total phenolics, total flavonoids, and phycocyanin). The results showed that RW drying can generate a dehydrated product with a moisture content lower than 10.0%, minimal visual changes, and reduced process time. The content of bioactive compounds after RW drying was found to be satisfactory, with some of them close to those observed in the fresh microalga. The best results for total phenolic (TPC) and total flavonoids (TFC) content were obtained at temperatures of around 70 °C and processing times around 4.5 h. The phycocyanin content was negatively influenced by higher temperatures (higher than 80 °C) and high exposing drying times (higher than 4.5 h) due to its thermosensibility properties. The use of refractance window drying proved to be an interesting methodology for the processing and conservation of Spirulina platensis, as well as an important alternative to the industrial processing of this biomass.
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Takeyama MM, de Carvalho MC, Carvalho HS, Silva CR, Uetanabaro APT, da Costa AM, Evaristo JAM, Nogueira FCS, Fai AEC, Koblitz MGB. Pectinases Secretion by Saccharomyces cerevisiae: Optimization in Solid-State Fermentation and Identification by a Shotgun Proteomics Approach. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27154981. [PMID: 35956930 PMCID: PMC9370124 DOI: 10.3390/molecules27154981] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 11/16/2022]
Abstract
A sequential design strategy was applied to optimize the secretion of pectinases by a Saccharomyces cerevisiae strain, from Brazilian sugarcane liquor vat, on passion fruit residue flour (PFRF), through solid-state fermentation (SSF). A factorial design was performed to determine the influence variables and two rotational central composite designs were executed. The validated experimental result was of 7.1 U mL−1 using 50% PFRF (w/w), pH 5, 30 °C for 24 h, under static SSF. Polygalacturonase, pectin methyl esterase, pectin–lyase and pectate–lyase activities were 3.5; 0.08; 3.1 and 0.8 U mL−1, respectively. Shotgun proteomics analysis of the crude extract enabled the identification of two pectin–lyases, one pectate–lyase and a glucosidase. The crude enzymatic extract maintained at least 80% of its original activity at pH values and temperatures ranging from 2 to 8 and 30 to 80 °C, respectively, over 60 min incubation. Results revealed that PFRF might be a cost-effective and eco-friendly substrate to produce pectinases. Statistical optimization led to fermentation conditions wherein pectin active proteins predominated. To the extent of our knowledge, this is the first study reporting the synthesis of pectate lyase by S. cerevisiae.
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Affiliation(s)
- Matheus Mikio Takeyama
- Food and Nutrition Graduate Program (PPGAN), Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro 22290-240, RJ, Brazil
| | - Márcia Corrêa de Carvalho
- Food and Nutrition Graduate Program (PPGAN), Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro 22290-240, RJ, Brazil
| | - Helena Sacco Carvalho
- Nutrition School, Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro 22290-240, RJ, Brazil
| | - Cristiane Rodrigues Silva
- Food and Nutrition Graduate Program (PPGAN), Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro 22290-240, RJ, Brazil
| | | | - Andrea Miura da Costa
- Department of Biological Sciences, Santa Cruz State University (UESC), Ilhéus 45662-900, BA, Brazil
| | - Joseph A. Medeiros Evaristo
- Laboratory of Proteomics/LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, RJ, Brazil
| | - Fábio César Sousa Nogueira
- Laboratory of Proteomics/LADETEC, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, RJ, Brazil
- Proteomics Unit, Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, RJ, Brazil
| | - Ana Elizabeth Cavalcante Fai
- Food and Nutrition Graduate Program (PPGAN), Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro 22290-240, RJ, Brazil
- Department of Basic and Experimental Nutrition, Rio de Janeiro State University (UERJ), Rio de Janeiro 20550-013, RJ, Brazil
| | - Maria Gabriela Bello Koblitz
- Food and Nutrition Graduate Program (PPGAN), Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro 22290-240, RJ, Brazil
- Correspondence: ; Tel./Fax: +55-21-2542-7236
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He J, Chiu C, Gavahian M, Ho C, Chu Y. Development and Application of Edible Coating on Dried Pineapple Exposed to Ohmic Blanching. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jia‐Jing He
- Department of Food Science College of Agriculture National Pingtung University of Science and Technology Pingtung Taiwan
| | - Chun‐Hui Chiu
- Graduate Institute of Health Industry and Technology Research Center for Chinese Herbal Medicine Research Center for Food and Cosmetic Safety College of Human Ecology Chang Gung University of Science and Technology Taoyuan Taiwan
- Department of Traditional Chinese Medicine Keelung Chang Gung Memorial Hospital Keelung Taiwan
| | - Mohsen Gavahian
- Department of Food Science College of Agriculture National Pingtung University of Science and Technology Pingtung Taiwan
| | - Chi‐Tang Ho
- Department of Food Science Rutgers University New Brunswick NJ USA
| | - Yung‐Lin Chu
- Department of Food Science College of Agriculture National Pingtung University of Science and Technology Pingtung Taiwan
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Nogueira GD, Silva PB, Duarte CR, Barrozo MA. Analysis of a hybrid packed bed dryer assisted by infrared radiation for processing acerola (Malpighia emarginata D.C.) residue. FOOD AND BIOPRODUCTS PROCESSING 2019. [DOI: 10.1016/j.fbp.2019.01.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ullah F, Kang M, Khattak MK, Wahab S. Retracted: Experimentally investigated the asparagus ( Asparagus officinalis L.) drying with flat-plate collector under the natural convection indirect solar dryer. Food Sci Nutr 2018; 6:1357. [PMID: 30258576 PMCID: PMC6145279 DOI: 10.1002/fsn3.603] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The above article, published online on 21 February 2018 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the authors, the journal Editor in Chief, Y. Martin Lo, and Wiley Periodicals, Inc. The retraction has been agreed at the authors’ request due to unattributed overlap between this article and the following article published in the Journal of Mechanical Engineering and Sciences, “Analysis of ginger drying inside a natural convection indirect solar dryer: An experimental study” by S. K. Sansaniwal and M. Kumar, Volume 9, pp. 1671–1685.
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Affiliation(s)
- Fahim Ullah
- College of Engineering Nanjing Agricultural University Nanjing China
| | - Min Kang
- College of Engineering Nanjing Agricultural University Nanjing China.,Guanyun Research Institute for Modern Agricultural Equipment Nanjing Agricultural University Guanyun China
| | - Mansoor Khan Khattak
- Department of Agricultural Mechanization FCPS The University of Agriculture Peshawar Peshawar Pakistan
| | - Said Wahab
- Department of Food Science and Technology FNS The University of Agriculture Peshawar Peshawar Pakistan
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