Article
Engineering, Environmental
Carmen Padilla-Rascon, Juan Miguel Romero-Garcia, Encarnacion Ruiz, Inmaculada Romero, Eulogio Castro
Summary: The study evaluated an optimized process for obtaining furfural from olive stone, demonstrating its potential as a promising raw material for furfural production.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Environmental
Carmen Padilla-Rascon, Juan Miguel Romero-Garcia, Inmaculada Romero, Encarnacion Ruiz, Eulogio Castro
Summary: Olive stones are the main by-product of the olive oil industry, and this study proposes an integrated multiproduct biorefinery for their utilization. The operational conditions for producing high sugar recovery and lignin recovery were optimized, resulting in promising yields. Therefore, olive stones can be considered as a potential raw material for multiproduct biorefinery.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Environmental
Yunfen Shi, Xinhong Du, Meitong Jin, Song Wu, Lei Wang, Nan Qiao, Dayu Yu
Summary: This study proposes a two-step method to reduce the inhibition of alkali on xylose production from hemicellulose, leading to an increased xylose yield and aiding in the resource utilization of high alkali concentration wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Qing Li, Dan An, Jiali Feng, Jun Hu, Wen Cao, Liejin Guo
Summary: A newly isolated bacterium Enterococcus faecium YA002 from cow dung showed high H-2 production performance in dark fermentation with xylose as substrate. The fermentative conditions were optimized by response surface methodology, with the optimal conditions resulting in an experimental H-2 production of 2918.91 ± 125.49 mL/L, which was 97.91% of the predicted H-2 production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Mohamed S. Hasanin, Nesrine Kassem, Mohammad L. Hassan
Summary: In this study, microcrystalline cellulose (MCC) was prepared from olive stones and characterized. The results showed good agreement in most properties between olive stone MCC and commercially available MCC, and the MCC prepared with sulfuric acid had higher surface area while the MCC prepared with hydrochloric acid had higher thermal stability.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Food Science & Technology
Mohamed Ghellam, Oscar Zannou, Hojjat Pashazadeh, Charis M. Galanakis, Turki M. S. Aldawoud, Salam A. Ibrahim, Ilkay Koca
Summary: Effects of syrup concentration and temperature variation are the most significant factors impacting the independent variables of berries during osmotic dehydration. Fruit-to-syrup ratio only appears to have a significant effect on water loss.
Article
Energy & Fuels
Rifat Mehdi, Salman Raza Naqvi, Abdul Ahad Khan, Asif Ali Mirani
Summary: The processing of olives generates a significant by-product called olive pomace, which contains bioactive compounds that are beneficial to human health. In this study, olive oil was successfully extracted from olive pomace using a solvent extractor with hexane as the solvent. Response surface methodology with central composite design was employed to determine the optimal parameters, resulting in a maximum oil yield of 12%.
Article
Agricultural Engineering
Denghao Ouyang, Tongxin Liu, Abdul Aziz Astimar, Soek Sin Teh, Jalil Nursyairah, Dehua Liu, Xuebing Zhao
Summary: A novel process for simultaneous production of furfural and pretreatment of oil palm empty fruit bunch (EFB) was developed. Mass transfer analysis suggested that internal diffusion could be neglected, while heating stage could not be neglected due to significant solubilization of xylan. Steam intermittent discharging strategy was developed to increase furfural yield. The pretreated solids showed good enzymatic digestibility, and high glucose yield was obtained. Non-isothermal effects on polysaccharide hydrolysis and pentose decomposition should be considered for an efficient process design.
BIORESOURCE TECHNOLOGY
(2023)
Review
Agricultural Engineering
Lucas Matheus Soares Pereira, Thais More Milan, Delia Rita Tapia-Blacido
Summary: The conversion of lignocellulosic biomass to bioethanol is complex and challenging, with Response Surface Methodology (RSM) playing a key role in optimizing production stages for economic and efficient processes.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
Mohammed Benhoula, Zahra Azzouz, Azzeddine Bettache, Marilize Le Roes-Hill, Warda Djoudi, Rima Maibeche, Samir Hamma, Mohamed Sabri Bensaad, Zahir Amghar, Aya Boudjelal, Said Benallaoua, Nawel Boucherba
Summary: This study isolated actinobacteria capable of producing extracellular lipases using olive mill wastewater (OMW) as the sole carbon source. The production of lipase was optimized using response surface methodology, and the optimal conditions were found to be incubation for 9 days at pH 4, with an inoculum size of 1.7x10(7) spores/mL, incubated at 30 degrees C using 6% (v/v) OMW.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Environmental
Elnaz Shahkouhmahali, Jalal Mohamadzadeh
Summary: This study aimed to extract TPCs efficiently from olive mill wastewater. The best extraction conditions were found to be using 80% ethanol at 25 degrees C and 2.5 bar, with a pH of 4. Temperature had the greatest impact on the extraction of TPC and TAA, while the pH factor had the least effect. The response surface method (RSM) proved to be a useful tool for assessing the ideal circumstances for phenolic component extraction.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Hiram Ramirez-Lagunes, Maria Guadalupe Aguilar-Uscanga, Maria Ines Infanzon-Rodriguez, Bernardo Sachman-Ruiz, Javier Gomez-Rodriguez, Cirilo Nolasco-Hipolito, Sandra del Moral
Summary: This study optimized xylanase production by evaluating different carbon and nitrogen sources, finding sugarcane bagasse to be the best carbon source and ammonium sulfate to be the best nitrogen source. These optimal conditions increased xylanase activity significantly, showing feasibility of producing xylanases using low-cost substrates and optimizing operating conditions.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Energy & Fuels
Oznur Yildirim, Bestami Ozkaya, Mahmut Altinbas, Ahmet Demir
Summary: Central composite design was used to optimize sugar recovery from cotton straw and sunflower straw using dilute acid pretreatment. The study identified the optimum pretreatment conditions for maximum sugar yield and demonstrated high ethanol production efficiency through fermentation. The results provide valuable insights for the commercialization of bioprocesses converting lignocellulosic waste into high value-added products in a biorefinery context.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Food Science & Technology
Ibrahim Bello, Adewale Adeniyi, Taofeek Mukaila, Ademola Hammed
Summary: Plants are recognized as renewable and sustainable protein sources, but extracting plant protein is difficult due to the plant's tough cell wall. Traditional methods use non-reusable strong alkali chemicals for protein extraction, but this study used NH4OH, a weak and reusable alkali, to extract soy protein. The extraction conditions were optimized using response surface methodology (RSM), and the results showed that NH4OH is suitable for extracting soybean protein with little impact on protein denaturation.
Article
Environmental Sciences
Ioanna Ntaikou, Sviatlana Siankevich, Gerasimos Lyberatos
Summary: The study shows that thermo-chemical pretreatment can significantly enhance the enzymatic digestibility of olive mill stones (OMS) and valorize the generated free sugars into alcohols. By adjusting parameters such as reaction time, temperature, type and concentration of dilute acids and bases, higher ethanol and xylitol yields can be obtained.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Eddy Plasquy, Jose Maria Garcia Martos, Maria del Carmen Florido Fernandez, Rafael Ruben Sola-Guirado, Juan Francisco Garcia Martin
Summary: The study examines the use of warm water to warm up olives before grinding to maintain a desired temperature, which is crucial for high-quality oil extraction. Results show the feasibility of the method and potential for further automation to improve efficiency and quality in olive processing.
Review
Engineering, Chemical
Francisco Jose Sanchez-Borrego, Paloma Alvarez-Mateos, Juan F. Garcia-Martin
Summary: Bio-oil is a promising source of chemicals and renewable fuels that can replace fossil fuels and be produced through pyrolysis. It contains various value-added chemicals, such as aromatic compounds, suitable for a range of applications.
Editorial Material
Engineering, Chemical
Miguel Torres-Garcia, Paloma Alvarez-Mateos, Juan Francisco Garcia-Martin
Article
Food Science & Technology
Chao-Hui Feng, Chiko Otani, Yuichi Ogawa, Juan F. Garcia-Martin
Summary: The Terahertz time-domain spectroscopy (THz-TDS) system was used to analyze the spectral changes of sausage hog and sheep casings before and after casing modification, showing higher absorbances for modified cases. The drying process under nitrogen gas significantly reduced the drying time for natural hog casing made from soy oil.
Article
Food Science & Technology
Karine Cristine Kaufmann, Klicia Araujo Sampaio, Juan F. Garcia-Martin, Douglas Fernandes Barbin
Summary: The study demonstrates that coriander oil can be effectively distinguished from adulterated oils using principal component analysis, linear discriminant analysis, and k-nearest neighbors algorithm. The performance of Partial Least Squares regression models also shows their potential utility in quality control processes.
Article
Agronomy
Francisco-Jose Sanchez-Borrego, Noelia Garcia-Criado, Juan F. Garcia-Martin, Paloma alvarez-Mateos
Summary: This study investigates the pyrolysis of orange waste and orange pruning to produce biochar and bio-oil for high-added-value compounds. The obtained biochar showed potential for reducing the sulphur content in waste cooking oil.
Article
Plant Sciences
Francisco Jose Sanchez-Borrego, Tomas Juan Barea de Hoyos-Limon, Juan Francisco Garcia-Martin, Paloma Alvarez-Mateos
Summary: Olive stones can be valorized through pyrolysis to obtain biochar and bio-oil, with temperature being the key parameter affecting the product distribution. Impregnated olive stones result in higher amounts of high-added-value products. The specific surface area of biochar has an impact on the esterification yield.
Review
Chemistry, Analytical
Juan Francisco Garcia Martin
Summary: The physico-chemical parameters of olive oil quality can be effectively measured using near-infrared spectroscopy (NIRS), with high precision for several important parameters. NIRS is suitable for predicting nutritional contents and has the potential for analyzing other parameters, although further improvement of mathematical models is required.
Article
Engineering, Chemical
Sebastian Sanchez, Inmaculada Olivares, Juan G. Puentes, Rafael Orpez, M. Dolores La Rubia, Rafael Pacheco, Juan F. Garcia Martin
Summary: The addition of high-purity NMT improved the extraction yields and quality of olive oil, especially enhancing the content of antioxidant compounds and increasing the oxidative stability of the oil.
Editorial Material
Engineering, Chemical
Juan Francisco Garcia Martin, Miguel Torres Garcia, Paloma Alvarez Mateos
Review
Acoustics
Qing-An Zhang, Hongrong Zheng, Junyan Lin, Guangmin Nie, Xuehui Fan, Juan Francisco Garcia-Martin
Summary: As a non-thermal physical technology, ultrasound is widely used in various food processing operations, including filtration, freezing, thawing, sterilization, cutting, extraction, aging, etc. It is also applied in the processing of meat products, fruits and vegetables, and dairy products. However, there is a lack of systematic sorting and summarizing of the impact of ultrasound on different characteristics of wine. This review aims to systematically summarize the current achievements and problems of ultrasound application in winemaking, including extraction, fermentation, aging, and sterilization, and discuss its advantages, disadvantages, and future development.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Engineering, Chemical
Antonio Rosales Martinez, Juan F. Garcia-Martin, Ignacio Rodriguez-Garcia
Summary: Significant efforts have been made to develop sustainable reduction reactions for organic and bioorganic compounds, with the selection of reagents and solvents playing a crucial role. Cp2TiCl/H2O has emerged as a safe, efficient, selective, and low-cost reagent, offering a sustainable alternative for organic compound reduction. This study focuses on describing the intermediates, mechanisms, and representative examples to enhance understanding of reductions facilitated by this system. Future perspectives are discussed, including the use of its analog Cp2TiCl/D2O as a powerful tool for preparing deuterated phenols as internal standards for analyzing bioactive phenols in olive oil.
Article
Engineering, Chemical
Fangchen Ding, Changzhou Zuo, Juan Francisco Garcia-Martin, Yan Ge, Kang Tu, Jing Peng, Hongmei Xiao, Weijie Lan, Leiqing Pan
Summary: Different packaging materials, such as PVC, PE, and EPE, have significant effects on the near infrared (NIR) prediction of mango quality. The spectral interferences resulting from these materials can be reduced using spectral filtering methods. Combining spectral filtering with variable selection methods can further improve the prediction accuracy of mango quality parameters.
JOURNAL OF FOOD ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Eddy Plasquy, Maria C. Florido, Rafael Ruben Sola-Guirado, Jose Maria Garcia Martos, Juan Francisco Garcia Martin
Summary: This study examined how the oxygen consumption and carbon dioxide production of olive fruit in a closed container varied at different temperatures, finding that olives may transition to anaerobic respiration quickly in high temperature environments.
FERMENTATION-BASEL
(2021)
Article
Biotechnology & Applied Microbiology
Manuel Cuevas, Juan F. Garcia Martin, Vicente Bravo, Sebastian Sanchez
Summary: This study investigated the potential of producing bioethanol from olive stones through liquid hot-water pre-treatment and subsequent enzymatic hydrolysis. The results showed that under the most suitable conditions, 6.4 dm(3) of ethanol per 100 kg of olive stones could be produced through this process.
FERMENTATION-BASEL
(2021)