1
|
Feng L, Yang Y, Xie YT, Yan WY, Ma YK, Hu S, Yu AN. The volatile organic compounds generated from the Maillard reaction between l-ascorbic acid and l-cysteine in hot compressed water. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:5764-5775. [PMID: 38385827 DOI: 10.1002/jsfa.13408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/14/2024] [Accepted: 02/22/2024] [Indexed: 02/23/2024]
Abstract
BACKGROUND Hot compressed water (HCW), also known as subcritical water (SCW), refers to high-temperature compressed water in a special physical and chemical state. It is an emerging technology for natural product extraction. The volatile organic compounds (VOCs) generated from the Maillard reaction between l-ascorbic acid (ASA) and l-cysteine (Cys) have attracted significant interest in the flavor and fragrance industry. This study aimed to explore the formation mechanism of VOCs from ASA and Cys and examine the effects of reaction parameters such as temperature, time, and pH in HCW. RESULTS The identified VOCs were predominantly thiophene derivatives, polysulfides, and pyrazine derivatives in HCW. The findings indicated that thiophene derivatives were formed under various pH conditions, with polysulfide formation favored under acidic conditions and pyrazine derivative formation preferred under weak alkaline conditions, specifically at pH 8.0. CONCLUSION The Maillard reaction between ASA and Cys mainly produced thiophene derivatives, polysulfides, and pyrazine derivatives in HCW. The generation mechanism was significantly dependent on the surrounding pH conditions. © 2024 Society of Chemical Industry.
Collapse
Affiliation(s)
- Liang Feng
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
- School of Light Industry, Beijing Technology and Business University, Beijing, China
| | - Yan Yang
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
| | - Ya-Ting Xie
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
| | - Wen-Yi Yan
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
| | - Ying-Ke Ma
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
| | - Sheng Hu
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
| | - Ai-Nong Yu
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi, China
| |
Collapse
|
2
|
Boudjelida S, Li X, Djellali S, Chiappetta G, Russo F, Figoli A, Carraro M. Synthesis and Characterization of Polyaniline Emeraldine Salt (PANI-ES) Colloids Using Potato Starch as a Stabilizer to Enhance the Physicochemical Properties and Processability. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2941. [PMID: 38930310 PMCID: PMC11205985 DOI: 10.3390/ma17122941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/14/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024]
Abstract
Conductive polymers, such as polyaniline (PANI), have interesting applications, ranging from flexible electronics, energy storage devices, sensors, antistatic or anticorrosion coatings, etc. However, the full exploitation of conductive polymers still poses a challenge due to their low processability. The use of compatible stabilizers to obtain dispersible and stable colloids is among the possible solutions to overcome such drawbacks. In this work, potato starch was used as a steric stabilizer for the preparation of colloidal polyaniline (emeraldine salt, ES)/starch composites by exploiting the oxidative polymerization of aniline in aqueous solutions with various starch-to-aniline ratios. The polyaniline/starch bio-composites were subjected to structural, spectroscopic, thermal, morphological, and electrochemical analyses. The samples were then tested for their dispersibility/solubility in a range of organic solvents. The results demonstrated the formation of PANI/starch biocomposites with a smaller average size than starch particles, showing improved aqueous dispersion and enhanced solubility in organic solvents. With respect to previously reported PANI-EB (emeraldine base)/starch composites, the novel colloids displayed a lower overall crystallinity, but the conductive nature of PANI-ES enhanced its electrochemical properties, resulting in richer redox chemistry, particularly evident in its oxidation behavior, as observed through cyclic voltammetry. Finally, as proof of the improved processability, the colloids were successfully integrated into a thin polyether sulfone (PES) membrane.
Collapse
Affiliation(s)
- Soufiane Boudjelida
- Department of Chemical Science, University of Padova, Via F. Marzolo 1, 35131 Padova, PD, Italy;
| | - Xue Li
- Department of Chemical Science, University of Padova, Via F. Marzolo 1, 35131 Padova, PD, Italy;
- Institute on Membrane Technology, CNR-ITM, UoS of Padova, Via F. Marzolo 1, 35131 Padova, PD, Italy
- Institute on Membrane Technology, CNR-ITM, Via P. Bucci 17/C, 87036 Arcavacata di Rende, CS, Italy; (G.C.); (F.R.); (A.F.)
| | - Souad Djellali
- Laboratory of Physical Chemistry of High Polymers, University Ferhat Abbas Setif 1, Setif 19000, Algeria;
- Department of Chemistry, Faculty of Sciences, University Ferhat Abbas Setif 1, Setif 19000, Algeria
| | - Giampiero Chiappetta
- Institute on Membrane Technology, CNR-ITM, Via P. Bucci 17/C, 87036 Arcavacata di Rende, CS, Italy; (G.C.); (F.R.); (A.F.)
| | - Francesca Russo
- Institute on Membrane Technology, CNR-ITM, Via P. Bucci 17/C, 87036 Arcavacata di Rende, CS, Italy; (G.C.); (F.R.); (A.F.)
| | - Alberto Figoli
- Institute on Membrane Technology, CNR-ITM, Via P. Bucci 17/C, 87036 Arcavacata di Rende, CS, Italy; (G.C.); (F.R.); (A.F.)
| | - Mauro Carraro
- Department of Chemical Science, University of Padova, Via F. Marzolo 1, 35131 Padova, PD, Italy;
- Institute on Membrane Technology, CNR-ITM, UoS of Padova, Via F. Marzolo 1, 35131 Padova, PD, Italy
| |
Collapse
|
3
|
Queffelec J, Flórez-Fernández N, Torres MD, Domínguez H. Evernia prunastri lichen as a source of bioactive glucans with potential for topical applications. Int J Biol Macromol 2024; 258:128859. [PMID: 38134984 DOI: 10.1016/j.ijbiomac.2023.128859] [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: 03/29/2023] [Revised: 12/07/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
Microwave hydrothermal treatment was selected to extract valuable fractions with bioactive and gelling properties from Evernia prunastri lichen with potential for topical applications. The impact of the extraction processing conditions on the soluble extracts, mucilage fraction and residual solid phase was analyzed within a lichen global valorization approach. A particular stress was made on the thermo-rheological and structural characteristics of the extracted glucan and galactomannan polymers, the corresponding gelled matrices, and their cosmetic feasibility. Results revealed that the proposed microwave-assisted treatment showed a relevant influence on the phytochemical features of the aqueous soluble extracts, accounting the major protein content at 120 °C and the enhanced antioxidant and anti-tyrosinase properties at 140 °C. Extracts at 200 °C showed the highest anti-inflammatory (COX-1 and COX-2 inhibition) efficacies. The biopolymer analyses indicated that those recovered after lichen hydrothermal treatment at 160 °C featured a good extraction performance, the highest molecular weight, apparent viscosity, and antiproliferative potential. The thermo-rheological properties of the corresponding matrices formulated at 10 % and 60 or 80 °C exhibited the strongest and most thermo-reversible characteristics, as well as antifreezing feasibility. Another advantage of the selected fractions was the absence of skin irritation according to the in vitro skin irritation assay.
Collapse
Affiliation(s)
- J Queffelec
- CINBIO, Universidade de Vigo, Department of Chemical Engineering, 32004 Ourense, Spain
| | - N Flórez-Fernández
- CINBIO, Universidade de Vigo, Department of Chemical Engineering, 32004 Ourense, Spain
| | - M D Torres
- CINBIO, Universidade de Vigo, Department of Chemical Engineering, 32004 Ourense, Spain.
| | - H Domínguez
- CINBIO, Universidade de Vigo, Department of Chemical Engineering, 32004 Ourense, Spain
| |
Collapse
|
4
|
Danciu CA, Tulbure A, Stanciu MA, Antonie I, Capatana C, Zerbeș MV, Giurea R, Rada EC. Overview of the Sustainable Valorization of Using Waste and By-Products in Grain Processing. Foods 2023; 12:3770. [PMID: 37893664 PMCID: PMC10606821 DOI: 10.3390/foods12203770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/05/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
In an increasingly resource-constrained era, using waste and by-products from grain processing has a wide appeal. This is due to the nutritive value and economic aspects of this process and due to its compatibility with the trend towards more sustainable food systems. Following the fundamentals of circular economy, a current need is the effective utilization of grain waste and by-products for conversion into value-added products in the food industry. The aim of this study is twofold: (1) using bibliometrics and the literature found in various databases, we aim to understand the progress of valorizing grain waste and by-products in human nutrition. The literature within various databases, namely, Google Scholar, Web of Science, and Elsevier Scopus, has been evaluated for its merits and values. (2) We aim to explore knowledge-based strategies by reviewing the literature concerning the possible use of grain waste and by-products for the food processing industry, reducing the burden on virgin raw materials. The review allowed us to unlock the latest advances in upcycling side streams and waste from the grain processing industry.
Collapse
Affiliation(s)
- Cristina-Anca Danciu
- Food Industry and Environmental Protection, Lucian Blaga University of Sibiu, 7-9 Dr. Ion Ratiu Street, 550012 Sibiu, Romania; (C.-A.D.); (M.-A.S.); (I.A.); (C.C.)
| | - Anca Tulbure
- Food Industry and Environmental Protection, Lucian Blaga University of Sibiu, 7-9 Dr. Ion Ratiu Street, 550012 Sibiu, Romania; (C.-A.D.); (M.-A.S.); (I.A.); (C.C.)
| | - Mirela-Aurora Stanciu
- Food Industry and Environmental Protection, Lucian Blaga University of Sibiu, 7-9 Dr. Ion Ratiu Street, 550012 Sibiu, Romania; (C.-A.D.); (M.-A.S.); (I.A.); (C.C.)
| | - Iuliana Antonie
- Food Industry and Environmental Protection, Lucian Blaga University of Sibiu, 7-9 Dr. Ion Ratiu Street, 550012 Sibiu, Romania; (C.-A.D.); (M.-A.S.); (I.A.); (C.C.)
| | - Ciprian Capatana
- Food Industry and Environmental Protection, Lucian Blaga University of Sibiu, 7-9 Dr. Ion Ratiu Street, 550012 Sibiu, Romania; (C.-A.D.); (M.-A.S.); (I.A.); (C.C.)
| | - Mihai Victor Zerbeș
- Department of Industrial Engineering and Management, Lucian Blaga University of Sibiu, 4 Emil Cioran Street, 550025 Sibiu, Romania; (M.V.Z.); (R.G.)
| | - Ramona Giurea
- Department of Industrial Engineering and Management, Lucian Blaga University of Sibiu, 4 Emil Cioran Street, 550025 Sibiu, Romania; (M.V.Z.); (R.G.)
| | - Elena Cristina Rada
- Department of Theoretical and Applied Sciences, University of Insubria, 46 Via G.B. Vico, 21100 Varese, Italy;
| |
Collapse
|
5
|
Chauhan A, Islam F, Imran A, Ikram A, Zahoor T, Khurshid S, Shah MA. A review on waste valorization, biotechnological utilization, and management of potato. Food Sci Nutr 2023; 11:5773-5785. [PMID: 37823156 PMCID: PMC10563700 DOI: 10.1002/fsn3.3546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 10/13/2023] Open
Abstract
One of the most popular, cost-effective crops that are consumed globally is the potato. Due to the expanding food crisis, there is an increase in the demand for potato-based agro-food items. At the same time, it is noted that this pathway of ecological pollution from large-scale wastes is challenging to manage. The food sector generates a lot of waste, which can be controlled better via biotechnological methods. The potato industry is one of the industries that generate a large amount of garbage that is harmful to the environment. Several by-products of industrial potato production, such as potato peels (PPs), starch, flakes, and granules, are disposed of despite being rich sources of nutrients and bioactive ingredients. These wastes can subsequently be used in biotechnological processing to produce microbial polysaccharides, yeast cellular biomass, lipids, protein, enzymes, organic acids, and carotenoids as components of the microbial medium. Similarly, food processing based on potatoes uses a lot of water, which is an issue because it pollutes wastewater. The most popular method for reducing trash that is both affordable and environmentally beneficial at the moment is biotechnology. The purpose of this review study is to illustrate the potential of applying biotechnological techniques to tackle the potato waste problem while simultaneously enhancing the economy. By discussing recent breakthroughs as well as current flaws in this method of controlling potato trash, this paper seeks to give a future vision of the justifiable use of biotechnological-based potato waste management and utilization strategies.
Collapse
Affiliation(s)
- Anamika Chauhan
- Department of Home ScienceChamanLal Mahavidyalay LandhoraHaridwarIndia
- Sri Dev Suman UniversityTehriIndia
| | - Fakhar Islam
- Department of Food ScienceGovernment College UniversityFaisalabadPakistan
- Department of Clinical NutritionNUR International UniversityLahorePakistan
| | - Ali Imran
- Department of Food ScienceGovernment College UniversityFaisalabadPakistan
| | - Ali Ikram
- University Institute of Food Science and Technology, The University of LahoreLahorePakistan
| | - Tahir Zahoor
- Department of Clinical NutritionNUR International UniversityLahorePakistan
| | - Sadaf Khurshid
- Department of Home EconomicsGovernment College UniversityFaisalabadPakistan
| | - Mohd Asif Shah
- Department of EconomicsKabridahar UniversityJigjigaEthiopia
- School of BusinessWoxsen UniversityHyderabadTelanganaIndia
- Division of Research and DevelopmentLovely Professional UniversityPhagwaraIndia
- School of Engineering and TechnologySharda UniversityGreater NoidaIndia
| |
Collapse
|
6
|
Ali SM, Siddique Y, Mehnaz S, Sadiq MB. Extraction and characterization of starch from low-grade potatoes and formulation of gluten-free cookies containing modified potato starch. Heliyon 2023; 9:e19581. [PMID: 37809979 PMCID: PMC10558832 DOI: 10.1016/j.heliyon.2023.e19581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 08/24/2023] [Accepted: 08/27/2023] [Indexed: 10/10/2023] Open
Abstract
Potatoes are among the leading staple crops due to nutritional value and high demand. The undersized and damaged potatoes are considered low grade and mainly dumped as a waste or used in animal feed. The study aimed to extract starch from low grade potatoes, its modification to improve the starch properties and formulation of gluten free cookies using modified starch (MS). The starch was extracted from low-grade potatoes of three varieties known as Asterix, Kruda and Mosaic, using the water steeping method. The native starch (NS) was modified using lintnerization and repetitive autoclaving. MS contains high amylose content which is associated with health benefits. NS and MS were characterized for amylose content, color attributes, granular morphology, water solubility index (WSI), water absorption index (WAI), thermogravimetric analysis (TGA) and Fourier transform infrared spectrometer (FTIR) analysis. Gluten-free cookies were formulated by adding potato NS and MS. The cookies were characterized by sensory evaluation, proximate and textural analysis. The starch yield extracted from three different varieties of potatoes i.e. Asterix, Kruda, Mosaic was 11.53%, 11.32% and 11.24%, respectively. The amylose content of potato starch was significantly (p < 0.05) increased for all varieties (33.61-37.74%) after modification of NS, which was in the range of 25.71-26.60% for different potato varieties. The granules of MS were observed as amorphous structures in comparison to NS granules with smooth surfaces. The addition of MS significantly (p < 0.05) decreased the hardness of the cookies in comparison to NS. Overall, no significant difference was observed in the sensory attributes of control, NS and MS containing cookies. Therefore, in comparison to other dietary fibers, MS can be used as a functional ingredient in food products without compromising the texture and sensory attributes.
Collapse
Affiliation(s)
- Syed Mueez Ali
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Yumna Siddique
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Samina Mehnaz
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| | - Muhammad Bilal Sadiq
- Kauser Abdulla Malik School of Life Sciences, Forman Christian College (A Chartered University), Lahore, 54600, Pakistan
| |
Collapse
|
7
|
Tosif MM, Bains A, Sadh PK, Sarangi PK, Kaushik R, Burla SVS, Chawla P, Sridhar K. Loquat seed starch - Emerging source of non-conventional starch: Structure, properties, and novel applications. Int J Biol Macromol 2023:125230. [PMID: 37301342 DOI: 10.1016/j.ijbiomac.2023.125230] [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: 04/11/2023] [Revised: 05/26/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
Recently, non-conventional sources of starch have attracted attention due to their potential to provide cost-effective alternatives to traditional starch. Among non-conventional starches, loquat (Eriobotrya japonica) seed starch is an emerging source of starch consisting of the amount of starch (nearly 20 %). Due to its unique structure, functional properties, and novel applications, it could be utilized as a potential ingredient. Interestingly, this starch has similar properties as commercial starches including high amylose content, small granule size, and high viscosity and heat stability, making it an attractive option for various food applications. Therefore, this review mainly covers the fundamental understanding of the valorization of loquat seeds by extracting the starch using different isolation methods, with preferable structural, morphological, and functional properties. Different isolation and modification methods (wet milling, acid, neutral and alkaline) are effectively used to obtain higher amounts of starch are revealed. Moreover, insight into various analytical techniques including scanning electron microscopy, differential scanning calorimetry, and X-ray diffraction used to characterize the molecular structure of the starch are discussed. In addition, the effect of shear rate and temperature on rheological attributes with solubility index, swelling power, and color is revealed. Besides, this starch contains bioactive compounds that have shown a positive impact on the enhancement of the shelf-life of the fruits. Overall, loquat seed starches have the potential to provide sustainable and cost-effective alternatives to traditional starch sources and can lead to novel applications in the food industry. Further research is needed to optimize processing techniques and develop value-added products that can be produced at a large scale. However, there is relatively limited published scientific evidence on the structural and morphological characteristics of loquat seed starch. Thus, in this review, we focused on different isolation techniques of loquat seed starch, its structural and functional characteristics, along with potential applications.
Collapse
Affiliation(s)
- Mansuri M Tosif
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Aarti Bains
- Department of Microbiology, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Pardeep Kumar Sadh
- Department of Biotechnology, Chaudhary Devi Lal University, Sirsa 125055, Haryana, India
| | - Prakash Kumar Sarangi
- College of Agriculture, Central Agricultural University, Imphal 795004, Manipur, India
| | - Ravinder Kaushik
- School of Health Sciences, University of Petroleum and Energy Studies, Dehradun 248007, Uttarakhand, India
| | | | - Prince Chawla
- Department of Food Technology and Nutrition, Lovely Professional University, Phagwara 144411, Punjab, India.
| | - Kandi Sridhar
- Department of Food Technology, Karpagam Academy of Higher Education (Deemed to be University), Coimbatore 641021, India.
| |
Collapse
|
8
|
Zena Y, Periyasamy S, Tesfaye M, Tumsa Z, Jayakumar M, Mohamed BA, Asaithambi P, Aminabhavi TM. Essential characteristics improvement of metallic nanoparticles loaded carbohydrate polymeric films - A review. Int J Biol Macromol 2023; 242:124803. [PMID: 37182627 DOI: 10.1016/j.ijbiomac.2023.124803] [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: 12/18/2022] [Revised: 04/24/2023] [Accepted: 05/06/2023] [Indexed: 05/16/2023]
Abstract
Petroleum-based films have contributed immensely to various environmental issues. Developing green-based films from carbohydrate polymers is crucial for addressing the harms encountered. However, some limitations exist on their property, processibility, and applicability that prohibit their processing for further developments. This review discusses the potential carbohydrate polymers and their sources, film preparation methods, such as solvent-casting, tape-casting, extrusion, and thermo-mechanical compressions for green-based films using various biological polymers with their merits and demerits. Research outcomes revealed that the essential characteristics improvement achieved by incorporating different metallic nanoparticles has significantly reformed the properties of biofilms, including crystallization, mechanical stability, thermal stability, barrier function, and antimicrobial activity. The property-enhanced bio-based films made with nanoparticles are potentially interested in replacing fossil-based films in various areas, including food-packaging applications. The review paves a new way for the commercial use of numerous carbohydrate polymers to help maintain a sustainable green environment.
Collapse
Affiliation(s)
- Yezihalem Zena
- Department of Chemical Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama 1888, Ethiopia
| | - Selvakumar Periyasamy
- Department of Chemical Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama 1888, Ethiopia.
| | - Melaku Tesfaye
- Department of Chemical Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama 1888, Ethiopia
| | - Zelalem Tumsa
- Department of Chemical Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama 1888, Ethiopia
| | - Mani Jayakumar
- Department of Chemical Engineering, Haramaya Institute of Technology, Haramaya University, P.O. Box No. 138, Haramaya, Dire Dawa, Ethiopia
| | - Badr A Mohamed
- Department of Agricultural Engineering, Cairo University, Giza 12613, Egypt
| | - Perumal Asaithambi
- Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Po Box - 378, Jimma, Ethiopia
| | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi 580 031, India.
| |
Collapse
|
9
|
Potato thermoplastic starch nanocomposite films reinforced with nanocellulose. PHYSICAL SCIENCES REVIEWS 2023. [DOI: 10.1515/psr-2022-0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Abstract
Potato is a widely available feedstock with biocompatibility and biodegradability properties, making it a strong candidate for producing thermoplastic starch. The application of thermoplastic starch to replace petroleum-based plastic as a sustainable and environmentally friendly approach led to its further improvement through various techniques such as modification and filler reinforcement. Numerous studies have been done addressing the properties enhancement of potato thermoplastic starch through filler reinforcement including nanocellulose. This review focus on the recent and future potential of potato-based starch as one of the feedstocks for producing potato thermoplastic starch composites reinforced with nanocellulose.
Collapse
|
10
|
Álvarez-Viñas M, Rivas S, Torres MD, Domínguez H. Microwave-Assisted Extraction of Carrageenan from Sarcopeltis skottsbergii. Mar Drugs 2023; 21:md21020083. [PMID: 36827124 PMCID: PMC9961692 DOI: 10.3390/md21020083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/18/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023] Open
Abstract
The development of greener processes for the sustainable utilization of raw materials is increasingly demanded for environmental and economic reasons. A rapid and chemical-free technique was proposed for the extraction of hybrid kappa/iota (6/4) carrageenan from Sarcopeltis (ex Gigartina) skottsbergii. After separation, carrageenans were analyzed by Fourier transform infrared attenuated total reflectance, high-performance size-exclusion chromatography, and rheology. Maximum carrageenan extraction yields up to 63-64% were obtained operating at 110 or at 160 °C, for 5-7 min considering the sum of the heating and cooling periods, but the extraction of the phenolic fraction was favored at 220 °C. The recovered carrageenan showed apparent viscous values around 103 mPa at the lowest tested shear rates (0.1 1/s) and could be suitable to formulate films. Furthermore, those carrageenans obtained under 140 °C showed gel characteristics without previous separation from the liquid extract, avoiding ethanolic precipitation and energy consumption. The antiradical properties correlated with the phenolic content in the liquid phase, but no influence of temperature on the reducing properties was observed. The microwave-assisted hydrothermal treatment could be an efficient tool without needing chemicals for the extraction of carrageenans, which showed adequate rheological properties for commercial uses.
Collapse
|
11
|
Feng L, Yang Y, Xie YT, Liu SS, Peng X, Hu S, Yu AN. Kinetics of L-ascorbic acid degradation and non-enzymatic browning development in hot-compressed water. Front Nutr 2023; 9:1022254. [PMID: 36712510 PMCID: PMC9877347 DOI: 10.3389/fnut.2022.1022254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 12/20/2022] [Indexed: 01/13/2023] Open
Abstract
The effect of reaction conditions, which comprised the reaction temperature (150-190°C), processing time (0.50, 0.75, 1.00, 1.25, 1.50, 2.00, and 2.50 h), pH (5.0, 7.0, and 9.5), and concentration (0.03-0.07 mol/L) of L-ascorbic acid (ASA), on the degradation of ASA was investigated in hot-compressed water (HCW). The degradation kinetics of ASA and generation kinetics of browning products (BPs) were studied. The results showed that ASA degradation conformed to the pseudo-first-order kinetics, and the formation of BPs was closely related to the concentration of H3O+ in HCW. The acidic condition (pH = 5.0) and lower concentration of ASA (0.03 mol/L) were more favorable for ASA degradation. In HCW, the average apparent activation energy (Ea) of ASA was 15.77, 31.70, and 47.53 kJ/mol at pH 5.0, 7.0, and 9.5, respectively. The possible degradation mechanisms of ASA and the generation of BPs in HCW were proposed based on the experimental results.
Collapse
Affiliation(s)
- Liang Feng
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi City, Hubei, China,Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi City, Hubei, China
| | - Yan Yang
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi City, Hubei, China,Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi City, Hubei, China,*Correspondence: Yan Yang,
| | - Ya-ting Xie
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi City, Hubei, China,Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi City, Hubei, China
| | - Shuang-shuang Liu
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi City, Hubei, China,Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi City, Hubei, China
| | - Xuan Peng
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Hubei Minzu University, Enshi City, Hubei, China
| | - Sheng Hu
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi City, Hubei, China,Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi City, Hubei, China
| | - Ai-nong Yu
- School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi City, Hubei, China,Key Laboratory of Biologic Resources Protection and Utilization of Hubei Province, Enshi City, Hubei, China
| |
Collapse
|
12
|
Yang Y, Liu Z, Huang M, Zhu Q, Zhao X. Automatic detection of multi-type defects on potatoes using multispectral imaging combined with a deep learning model. J FOOD ENG 2023. [DOI: 10.1016/j.jfoodeng.2022.111213] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
13
|
Liu Y, Liu M, Zhang L, Cao W, Wang H, Chen G, Wang S. Preparation and properties of biodegradable films made of cationic potato-peel starch and loaded with curcumin. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107690] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
14
|
Amara FB, Bouzid M, Sahnoun M, Nasr YB, Jaouadi B, Bejar S, Jemli S. Valorization of Potato Peels Starch for Efficient β‐Cyclodextrin Production and purification through an Eco‐Friendly Process. STARCH-STARKE 2022. [DOI: 10.1002/star.202200037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fakhreddine Ben Amara
- Laboratory of Microbial Biotechnology and Enzymes Engineering Centre of Biotechnology of Sfax (CBS) Road of Sidi Mansour Km 6, PO Box 1177 Sfax 3018 Tunisia
- Department of Biology Faculty of Sciences of Sfax University of Sfax Road of Soukra Km, 3.5 Sfax 3038 Tunisia
| | - Moetaz Bouzid
- Department of Biology Faculty of Sciences of Sfax University of Sfax Road of Soukra Km, 3.5 Sfax 3038 Tunisia
| | - Mouna Sahnoun
- Laboratory of Microbial Biotechnology and Enzymes Engineering Centre of Biotechnology of Sfax (CBS) Road of Sidi Mansour Km 6, PO Box 1177 Sfax 3018 Tunisia
| | - Yosri Ben Nasr
- Laboratory of Microbial Biotechnology and Enzymes Engineering Centre of Biotechnology of Sfax (CBS) Road of Sidi Mansour Km 6, PO Box 1177 Sfax 3018 Tunisia
| | - Bassem Jaouadi
- Laboratory of Microbial Biotechnology and Enzymes Engineering Centre of Biotechnology of Sfax (CBS) Road of Sidi Mansour Km 6, PO Box 1177 Sfax 3018 Tunisia
| | - Samir Bejar
- Laboratory of Microbial Biotechnology and Enzymes Engineering Centre of Biotechnology of Sfax (CBS) Road of Sidi Mansour Km 6, PO Box 1177 Sfax 3018 Tunisia
| | - Sonia Jemli
- Laboratory of Microbial Biotechnology and Enzymes Engineering Centre of Biotechnology of Sfax (CBS) Road of Sidi Mansour Km 6, PO Box 1177 Sfax 3018 Tunisia
- Department of Biology Faculty of Sciences of Sfax University of Sfax Road of Soukra Km, 3.5 Sfax 3038 Tunisia
| |
Collapse
|
15
|
Jena S, Singh R. Agricultural crop waste materials - A potential reservoir of molecules. ENVIRONMENTAL RESEARCH 2022; 206:112284. [PMID: 34717942 DOI: 10.1016/j.envres.2021.112284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 09/09/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
Crop wastes are one of the agricultural wastes generated during the production and processing of food materials. Their generation is the other side of developmental activities. They are now becoming an alarming source of environmental pollution, leading to an unhealthy society. There is an urgent need to develop robust methods to utilize these types of wastes into beneficial compounds or materials. Many works are successfully done in these areas, and several strategies have been developed to produce biochemicals from biological wastes. In other words, value addition has been done to the crop waste materials. The chemicals like carbohydrates, minerals, proteins, and other compounds have been isolated from various crop residues. In this context, this article covers an overview of the crop wastes, chemicals isolated from them, their extraction methods, and the way forward to get the valuable chemicals.
Collapse
Affiliation(s)
- Saikrushna Jena
- Department of Applied Chemistry, Delhi Technological University, Delhi, 110 042, India
| | - Ram Singh
- Department of Applied Chemistry, Delhi Technological University, Delhi, 110 042, India.
| |
Collapse
|
16
|
Baltrusch KL, Torres MD, Domínguez H, Flórez-Fernández N. Spray-drying microencapsulation of tea extracts using green starch, alginate or carrageenan as carrier materials. Int J Biol Macromol 2022; 203:417-429. [PMID: 35077749 DOI: 10.1016/j.ijbiomac.2022.01.129] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 01/13/2022] [Accepted: 01/19/2022] [Indexed: 12/17/2022]
Abstract
Tea industry generates many by-products which could be used to produce and incorporate bioactive tea extracts (TE) into nutraceuticals, cosmetics and/or clinical applications. However, sensibility to external factors is a major disadvantage hindering its utilization. This study deals with the implementation and characterization of suitable biopolymer delivery systems based on starch, carrageenan or alginate, as microencapsulation, to stabilize and protect TE through innovative thin-carbohydrate-coated formulations. TE were spray-dried and microencapsulated in recycled carrier materials (alginate, carrageenan or starch). Product yields varied from 55 to 58%. High microencapsulation and loading efficiencies were achieved (60-93% and 65-84%, respectively). Antioxidant capacity varied from 32 to 46 g Trolox/100 g extract, within different carrier-systems; which also showed promising rheological and UV-protective properties when transformed into gels. Total phenolic content, particle-size distribution, HPSEC-analysis, SEM-analysis and FTIR-analysis were also performed. In sum, this paper characterizes and discusses the high potential of these recycled carbohydrate-coated microparticles for future applications.
Collapse
Affiliation(s)
- K L Baltrusch
- Department of Chemical Engineering, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; CINBIO, Universidade de Vigo, 32004 Ourense, Spain
| | - M D Torres
- Department of Chemical Engineering, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; CINBIO, Universidade de Vigo, 32004 Ourense, Spain.
| | - H Domínguez
- Department of Chemical Engineering, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; CINBIO, Universidade de Vigo, 32004 Ourense, Spain
| | - N Flórez-Fernández
- Department of Chemical Engineering, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; CINBIO, Universidade de Vigo, 32004 Ourense, Spain
| |
Collapse
|
17
|
Rodríguez-Seoane P, Díaz-Reinoso B, Torres M, Domínguez H. Sequential extraction of antioxidants from paulownia petioles with sc-CO2 and with subcritical water and formulation of hydrogels with the residual solids. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
18
|
Torres M, Fradinho P, Raymundo A, Sousa I, Falqué E, Domínguez H. The key role of thermal waters in the development of innovative gelled starch-based matrices. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
19
|
Órbenes G, Rodríguez-Seoane P, Torres MD, Chamy R, Zúñiga ME, Domínguez H. Valorization of Artichoke Industrial By-Products Using Green Extraction Technologies: Formulation of Hydrogels in Combination with Paulownia Extracts. Molecules 2021; 26:4386. [PMID: 34299659 PMCID: PMC8306175 DOI: 10.3390/molecules26144386] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/15/2021] [Accepted: 07/17/2021] [Indexed: 11/17/2022] Open
Abstract
The integral valorization of artichoke bracts generated during industrial canning of artichoke was assessed. The extraction of bioactive compounds was addressed with pressurized hot water under subcritical conditions. The performance of this stage on the extraction of phenolics with antioxidant properties and the saccharidic fraction using conventional and microwave heating was compared. The microwave assisted process was more efficient than the conventional one regarding extraction yields of total solubles, and glucose and fructose oligomers and phenolics, because lower operational temperatures and shorter times were needed. Degradation of fructose oligomers was observed at temperatures higher than 160 °C, whereas the maximal phenolic content occurred at 220 °C. Both the extracts and the residual solids, obtained at conditions leading to maximum phenolics yields, were evaluated for the production of starch-based hydrogels, supplemented with Paulownia leaves' aqueous extracts.
Collapse
Affiliation(s)
- Gabriela Órbenes
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2085, Valparaíso 2340950, Chile; (G.Ó.); (R.C.)
- Centro Regional de Estudios en Alimentos Saludables, CREAS, Av. Universidad 330, Curauma, Valparaíso 2340950, Chile;
| | - Paula Rodríguez-Seoane
- Departamento de Enxeñería Quimica, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; (M.D.T.); (H.D.)
| | - María Dolores Torres
- Departamento de Enxeñería Quimica, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; (M.D.T.); (H.D.)
| | - Rolando Chamy
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2085, Valparaíso 2340950, Chile; (G.Ó.); (R.C.)
| | - María Elvira Zúñiga
- Centro Regional de Estudios en Alimentos Saludables, CREAS, Av. Universidad 330, Curauma, Valparaíso 2340950, Chile;
| | - Herminia Domínguez
- Departamento de Enxeñería Quimica, Universidade de Vigo (Campus Ourense), Edificio Politécnico, As Lagoas, 32004 Ourense, Spain; (M.D.T.); (H.D.)
| |
Collapse
|
20
|
Phenolic composition and cell-based biological activities of ten coloured potato peels (Solanum tuberosum L.). Food Chem 2021; 363:130360. [PMID: 34153675 DOI: 10.1016/j.foodchem.2021.130360] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 04/26/2021] [Accepted: 05/25/2021] [Indexed: 01/09/2023]
Abstract
The present study provides an in-depth characterisation of the non-anthocyanin and anthocyanin phenolic compounds of potato peels from ten coloured potato varieties. Furthermore, the underexplored bioactive potential (antioxidant, cytotoxic and anti-inflammatory capacities) of the studied peels is comprehensively analysed. Among non-anthocyanin phenolics, caffeic and a caffeoylquinic acid were found in the highest concentrations in all samples, which also showed the presence of O-glycosylated flavonol derivatives and polyamine derivatives. Acylated anthocyanins were identified in red and purple varieties, being pelargonidin, peonidin, and malvidin the most prominent aglycones. All samples revealed antioxidant and antitumor activities, and no toxic effect. The extract of the Rosemary variety presented the best antioxidant and antitumor outcomes and was the only sample to reveal anti-inflammatory activity. These results are valuable for the food-industry by adding value to an important bio-residue, particularly concerning its potential as natural ingredients in novel food and pharmaceutical formulations.
Collapse
|
21
|
Schalchli H, Hormazábal E, Astudillo Á, Briceño G, Rubilar O, Diez MC. Bioconversion of potato solid waste into antifungals and biopigments using Streptomyces spp. PLoS One 2021; 16:e0252113. [PMID: 34019577 PMCID: PMC8139487 DOI: 10.1371/journal.pone.0252113] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 05/10/2021] [Indexed: 11/24/2022] Open
Abstract
Potato waste was processed and used as a sole substrate for simultaneously producing antifungals and biopigments using Streptomyces spp. Out of three different Streptomyces isolates, strain SO6 stood out due to its ability to produce antifungals against economically important fungal phytopathogens and intracellular biopigments using potato waste powders without additional nutrients. This strain also showed the potential to secrete a broad range of enzymes for fermentation of eight sugars that could be involved in potato waste bioconversion. The results of the fermentation assay indicated that Streptomyces sp. strain SO6 degrades potato wastes during submerged fermentation, diminishing total dry weight and increasing reducing sugars from 0.3 to 3.6 mg·mL−1 and total proteins from 70.6 to 187.7 μg·mL−1. The results showed that Streptomyces strain SO6 was able to convert the potato waste into 0.96 mg·g−1 of diffusible antifungals and 1.75 mg·g−1 of reddish-purple biopigments. On the contrary, an absence of pigment production was observed during the fermentation of the commercial medium used as reference. According to our results, replacement of commercial culture media with available low-cost agroindustrial wastes for producing bioactive chemicals is a real opportunity to enhance the Streptomyces pigment production and antibiotic sustainability with cost-competitiveness. To our knowledge, this is the first report on the simultaneous production of biopigments and diffusible antifungal antibiotics produced by Streptomyces spp. using potato solid waste as the sole nutrient source.
Collapse
Affiliation(s)
- Heidi Schalchli
- Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
- Chemical Engineering Department, Universidad de La Frontera, Temuco, Chile
- * E-mail: (HS); (GB)
| | - Emilio Hormazábal
- Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
- Chemical Sciences and Natural Resources Department, Universidad de La Frontera, Temuco, Chile
| | - Álvaro Astudillo
- Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Gabriela Briceño
- Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
- Chemical Sciences and Natural Resources Department, Universidad de La Frontera, Temuco, Chile
- * E-mail: (HS); (GB)
| | - Olga Rubilar
- Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
- Chemical Engineering Department, Universidad de La Frontera, Temuco, Chile
| | - María Cristina Diez
- Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
- Chemical Engineering Department, Universidad de La Frontera, Temuco, Chile
| |
Collapse
|
22
|
Mechanical Characterization of Biopolymer-Based Hydrogels Enriched with Paulownia Extracts Recovered Using a Green Technique. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10238439] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This study deals with the development and mechanical characterization of innovative starch- and gelatin-based hydrogels enriched with hydrothermal aqueous extracts from Paulownia (i.e., bark, leaves, petioles). The color, rheology, and texture properties of formulated biopolymer-based hydrogels depending on the processing conditions of the extracts was evaluated for the different Paulownia fractions. Results indicated that a clear impact on color features of the tested hydrogels was observed with the incorporation of Paulownia extracts. Rheological testing showed that weak and intermediate strength hydrogels were identified for starch- and gelatin-based hydrogels independently of used extract. A relevant softening of all gelled matrices was observed in the presence of recovered liquor extracts involving the following trend (leaves > barks > petioles). For all fractions, the highest viscoelastic features were achieved for hydrogels made with extracts recovered at 140 °C. Texture outcomes confirmed the rheological achievements. No syneresis was observed in developed hydrogels after two weeks of cold storage.
Collapse
|
23
|
Lu Y, Zhang Q, Wang X, Zhou X, Zhu J. Effect of pH on volatile fatty acid production from anaerobic digestion of potato peel waste. BIORESOURCE TECHNOLOGY 2020; 316:123851. [PMID: 32738559 DOI: 10.1016/j.biortech.2020.123851] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/10/2020] [Accepted: 07/11/2020] [Indexed: 06/11/2023]
Abstract
In this study, potato peel waste was used as feedstock to produce volatile fatty acids (VFAs) by anaerobic digestion. The effects of different pH levels (pH 5.0, pH 7.0, pH 11.0, and uncontrolled pH) on VFA concentration and composition, intermediate products, and metabolic state were evaluated. The results showed that the highest total VFA production was achieved with pH 7.0 (41.9 g COD/L and 632.2 mg COD/g VSfed), followed by that with uncontrolled pH. Butyric acid was the dominant product under acidic pH, whereas acetic acid dominated under alkaline pH. The type of acidogenic fermentation at pH 7.0 was the mixed-acid type. The change in NADH level in the mixed-acid type of fermentation consisted of small fluctuations, enhancing the stability and efficiency of fermentation. The enzymatic activities of acetate kinase and butyrate kinase were slightly inhibited at pH 5.0 and 11.0, resulting in relatively low VFAs production.
Collapse
Affiliation(s)
- Yu Lu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Qi Zhang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Xiangyou Wang
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Xiaonan Zhou
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China
| | - Jiying Zhu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, Shandong 255049, China.
| |
Collapse
|
24
|
|
25
|
Improving the nutritional performance of gluten-free pasta with potato peel autohydrolysis extract. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2020.102374] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|