Article
Agronomy
Dannylo Sousa, Matilda Larsson, Elisabet Nadeau
Summary: This study evaluated the complete substitution of silage pulp (SP) for grass-clover silage in the diet of dairy cows and its impact on milk production. The results showed that cows receiving the silage-based diet had higher milk yield and energy corrected milk compared to those receiving the SP-based diet. Additionally, the silage-based diet led to higher milk protein and milk fat yields. However, diets did not significantly affect milk composition, body condition score, or body weight.
Article
Agronomy
Zoltan Kovacs, Aron Soos, Bela Kovacs, Laszlo Kaszas, Nevien Elhawat, Mutasem Razem, Szilvia Veres, Miklos G. Fari, Judit Koroknai, Tarek Alshaal, Eva Domokos-Szabolcsy
Summary: This study investigated the incorporation of selenium in different forms into green biomass of multiple-harvest alfalfa and the impact on the chemical quality of processed products. The results showed that selenium-enriched alfalfa could provide functional products with enhanced nutritional value, including selenium, protein, and phytochemical contents.
Article
Agronomy
Brooke Micke, Sanna Bergqvist, Steffen Adler, Julien Morel, David Parsons
Summary: A leaf stripping technique was successfully implemented in mixed grass-clover ley areas in Sweden, resulting in forage with higher crude protein and lower neutral detergent fibre content. This forage can be used as an energy source for monogastric animals or to increase digestibility and protein content in feed rations for high producing dairy cows.
GRASS AND FORAGE SCIENCE
(2023)
Article
Materials Science, Paper & Wood
Wentao Li, Baohua Chai, Yan Lu, Meijing Wang
Summary: This study investigated the bio-methane potential (BMP) and kinetic analysis of co-digestion process of different perennial crops (grass, alfalfa, and red clover) in various feedstock concentrations based on volatile solid (VS). The results showed that grass and legumes had the highest methane yield at 5 VS/L and 20 VS/L, respectively. Co-digestion of grass and perennials resulted in better methane production, with a yield 9.1% higher than mono-digestion. Furthermore, the co-digestion of grass and legumes significantly improved VS removal efficiency compared to mono-legumes digestion.
Article
Agronomy
Samuel Peprah, Enkhjargal Darambazar, Bill Biligetu, Alan D. Iwaasa, Kathy Larson, Daalkhaijav Damiran, Herbert A. Lardner
Summary: The study examined the potential of novel forage mixtures to address reduced herbage for late season grazing. Results showed that hybrid bromegrass-legume mixture had higher forage yield compared to Russian wildrye-legume mixture, with the highest legume contribution coming from MountainSF and ALF in July. Overall, the July harvest had greater yield, legume content, and nutritive value compared to the September harvest.
Article
Multidisciplinary Sciences
Nicolai Sundgaard Bekker, Saqib Sohail Toor, Kamaldeep Sharma, Thomas Helmer Pedersen, Lars Haastrup Pedersen
Summary: In this study, clover-grass press cake was pretreated with liquid hot water at temperatures of 180-200 degrees C for 5-10 min. The pretreatment resulted in the extraction of up to 48% hemicellulose and 4% cellulose. The optimal pretreatment conditions were identified as 190 degrees C and 10 min, with monosaccharide yields of 90% and 73% by slurry and solid conversion, respectively. The study highlights the potential of clover-grass press cake as a feedstock for fermentable sugar production in a biorefinery context.
Article
Agriculture, Dairy & Animal Science
D. O. Sousa, M. Murphy, R. Hatfield, E. Nadeau
Summary: This study evaluated the impact of harvest date and forage species on hydroxycinnamic acid concentrations in silage and dairy cow performance. Results showed that late harvesting increased fiber components in timothy and hydroxycinnamic acid concentrations were mainly affected by forage species, ultimately affecting milk production.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Agriculture, Dairy & Animal Science
K. M. Scully, B. Keogh, B. O' Brien, I. A. Casey, J. Humphreys
Summary: The study found that late spring-calving dairy cows without fertilizer showed higher pasture dry matter production, and winter grazing favored subsequent clover dry matter production and biological N fixation. However, extending the lactation into the following winter led to inefficient pasture utilization and decreased milk quality in late lactation.
JOURNAL OF DAIRY SCIENCE
(2021)
Review
Biotechnology & Applied Microbiology
Jua Kim, Young-Min Kim, Veeranjaneya Reddy Lebaka, Young-Jung Wee
Summary: Lactic acid is an organic acid with applications in various industries. Utilizing renewable biomass and immobilization techniques can enhance lactic acid production. Genetic and metabolic engineering methods are used to solve key problems in lactic acid production.
FERMENTATION-BASEL
(2022)
Article
Environmental Sciences
Kai-Yun Li, Niall G. Burnside, Raul Sampaio de Lima, Miguel Villoslada Pecina, Karli Sepp, Ming-Der Yang, Janar Raet, Ants Vain, Are Selge, Kalev Sepp
Summary: This study used machine learning techniques and multispectral vegetation indices to predict the dry matter yields of red clover-grass mixtures under different farming operations. The results showed the best performance of the artificial neural network model, which was influenced by farming operations.
Article
Biotechnology & Applied Microbiology
Thomas Eliasson, Li Sun, Ase Lundh, Annika Hojer, Karin Hallin Saeden, Marten Hetta, Horacio Gonda
Summary: This study aims to investigate the epiphytic microbiota in grass-clover herbage harvested at different sites and occasions, as well as explore the effects of different silage additives on the resulting microbiota. The study found that the microbiota in the herbage was random and not dependent on site or harvesting time. Silage additives had a major impact on the ensiling process, with inoculation resulting in well-fermented silages dominated by Lactobacillus and Pediococcus genera. Acid-treatment surprisingly resulted in a less preferable silage outcome. Silage making without additives is not recommended based on the study's results.
JOURNAL OF APPLIED MICROBIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Alicia Dobon-Suarez, Maria J. Gimenez, Salvador Castillo, Maria E. Garcia-Pastor, Pedro J. Zapata
Summary: The bioactive compounds and antioxidant capacity of green peppers are significantly influenced by the phenological stage and harvest date, with levels of Vitamin C increasing and total phenol content decreasing as the fruit develops. Optimal bioactive compounds appear by the phenological stage S12 and the harvest date of 20 April, which may be more beneficial for health.
Article
Biotechnology & Applied Microbiology
Kai Mao, Zhu Yu, Shuai Huang, Musen Wang, David B. Hannaway
Summary: The study found that as storage time increased, the fermentation quality of alfalfa silage decreased, while M1, M2, and corn silages showed better stability and fermentation quality during storage. The dominant bacterial communities in M1, M2, and corn silages underwent significant changes during storage.
FERMENTATION-BASEL
(2022)
Article
Agriculture, Dairy & Animal Science
M. R. Chowdhury, R. G. Wilkinson, L. A. Sinclair
Summary: Reducing the dietary crude protein concentration can have positive effects on milk production in terms of financial cost and environmental impact. Two studies found that reducing the protein concentration to 150 g/kg had little effect on nutrient digestibility or milk performance, but increased nitrogen use efficiency in dairy cows.
JOURNAL OF DAIRY SCIENCE
(2023)
Article
Agriculture, Multidisciplinary
Meike Grosse, Thorsten Haase, Juergen Hess
Summary: The study found that in organic farming, the choice of crop rotation is more important for weed control, while the choice of tillage method is more important for the diversity of the weed community.
RENEWABLE AGRICULTURE AND FOOD SYSTEMS
(2021)
Article
Agricultural Engineering
Sofia Maina, Roland Schneider, Maria Alexandri, Harris Papapostolou, George-John Nychas, Apostolis Koutinas, Joachim Venus
Summary: The production of acetoin and D-BDO by Bacillus amyloliquefaciens cultivated on bakery waste hydrolysates can be influenced by varying the volumetric oxygen transfer coefficient (kLa). Batch fermentations with different kLa values were found to have significant impact on the production yields and rates, with fed-batch cultures at higher kLa values leading to combined production of acetoin, meso-BDO and D-BDO. The results suggest that manipulating the kLa value can redirect bacterial metabolism towards higher acetoin or D-BDO production during fermentation in crude bakery waste hydrolysates.
BIORESOURCE TECHNOLOGY
(2021)
Article
Microbiology
Linda Schroedter, Friedrich Streffer, Katrin Streffer, Peter Unger, Joachim Venus
Summary: This study proposes a new biorefinery concept that integrates novel LX-pretreatment with the fermentative production of L-(+)-lactic acid. Lignocellulose was chosen as a substrate due to its non-competition with food or feed supply, as well as its potential as a renewable source for aromatic compounds.
Article
Microbiology
Gheorghe-Adrian Martau, Peter Unger, Roland Schneider, Joachim Venus, Dan Cristian Vodnar, Jose Pablo Lopez-Gomez
Summary: Solid state fermentation (SsF) is an effective method for enzyme production using organic residues. This study demonstrated the feasibility of using enzymes produced via SsF for subsequent hydrolysis and production of target compounds through submerged-liquid fermentations (SmF). The combination of SsF and SmF technologies showed promising results in valorizing wheat bran and organic fraction of municipal solid waste.
Editorial Material
Microbiology
Dan Cristian Vodnar, Joachim Venus, Laurent Dufosse
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Energy & Fuels
Rylan Cox, Vivek Narisetty, Sanjay Nagarajan, Deepti Agrawal, Vivek V. Ranade, Konstantinos Salonitis, Joachim Venus, Vinod Kumar
Summary: Bread waste is a severe problem in Europe, but it can be transformed into lactic acid and solid residues that can be used for biogas production. This study demonstrates the potential of an integrated biorefinery based on bread waste, with high lactic acid titer and biogas production.
Article
Polymer Science
Gabriela Precup, Joachim Venus, Monika Heiermann, Roland Schneider, Ioana Delia Pop, Dan Cristian Vodnar
Summary: Xylo-oligosaccharides and fermentable sugars were extracted from wheat straw using an integrated approach. The combination of alkaline and enzymatic treatment with xylanase showed the highest concentration of fermentable sugars, while slightly reducing the yield of xylo-oligosaccharides. Refining experiments resulted in a purified fraction, but further optimization is needed to increase the yield.
Article
Biochemical Research Methods
Maria Alexandri, Dennis Huebner, Roland Schneider, Antje Froehling, Joachim Venus
Summary: This study demonstrates the production of high enantiomeric purity D-lactic acid using lignocellulosic hydrolysates from newly isolated lactic acid bacterial strains. Through strain selection, co-cultivation, and nanofiltration, the researchers were able to achieve high optical purity D-lactic acid production. This study highlights the feasibility of utilizing lignocellulosic hydrolysates for producing high purity D-lactic acid.
Article
Biotechnology & Applied Microbiology
Jose Pablo Lopez-Gomez, Peter Unger, Roland Schneider, Marie -Aline Pierrard, Joachim Venus
Summary: During the production of pasta, a considerable amount of pasta wastes (PW) is generated. In this study, PW was characterized and used as a substrate for lactic acid (LA) fermentation. The sequential hydrolysis and fermentation process demonstrated higher yields and was successfully scaled up to a 50 L scale.
FOOD AND BIOPRODUCTS PROCESSING
(2022)
Article
Biotechnology & Applied Microbiology
Punnita Pamueangmun, Aliyu Dantani Abdullahi, Md. Humayun Kabir, Kridsada Unban, Apinun Kanpiengjai, Joachim Venus, Kalidas Shetty, Chalermpong Saenjum, Chartchai Khanongnuch
Summary: This study proposes the use of sustainable and economically feasible processes and renewable lignocellulose biomass as a starting raw material for second-generation lactic acid production. Weizmannia coagulans MA42, isolated from a soil sample in Chiang Mai province, Thailand, showed the highest production of L-lactic acid and lignocellulolytic enzymes compared to other isolates. The study also found that pretreating the substrates with diluted sulfuric acid and diluted sodium hydroxide improved the efficiency of L-lactic acid production.
FERMENTATION-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Sofia-Maria Ioannidou, Jose Pablo Lopez-Gomez, Joachim Venus, Miguel Angel Valera, Vera Essmann, Irantzu Alegria-Dallo, Ioannis K. Kookos, Apostolis Koutinas, Dimitrios Ladakis
Summary: Process design, techno-economic assessment, and life cycle assessment methods were used to evaluate four biorefinery concepts utilizing the organic fraction of municipal solid waste (OFMSW) for the production of biosurfactants and lactic acid (LA), succinic acid (SA), hot melt adhesives (HMAs), or polyurethane urea dispersions (PUDs). LA and SA were produced through fermentation using sugar-rich OFMSW enzymatic hydrolysates, while biosurfactants were produced from OFMSW-derived lipids and proteins and bacterial biomass remaining at the end of fermentation. OFMSW-derived SA replaced fossil-based SA and adipic acid in PUDs production. The study employed process design for equipment sizing and costing, as well as the estimation of material and energy balances using experimental results obtained during the H2020 funded PERCAL project. HMAs and PUDs production could be profitable when biosurfactants are produced as co-products in OFMSW-based biorefineries, resulting in minimum selling prices (MSP) of $2.92 per kg (HMAs) and $1.95 per kg (PUDs) when considering biosurfactants market price of $4.1 per kg, OFMSW management fees of $0.035 per kg, and production capacities of SA and LA at economies of scale. If LA or SA are considered as final products together with biosurfactants, then the corresponding MSPs are $1.58 per kg (LA) and $2.14 per kg (SA). Five environmental indicators were estimated, considering either conventional electricity production mix (grid) or renewable electricity usage from photovoltaics. The proposed OFMSW-based biorefineries lead to 25-35% greenhouse gas emission savings per kg main product (or 0.95-2.06 kg CO2-eq per kg dry OFMSW) compared to conventional production of end-products and two OFMSW management practices based on either landfilling alone or combined composting (37.45%) and landfilling (62.55%). The results demonstrate that OFMSW-based biorefineries could lead to profitable and sustainable production of bio-based products and the utilization of OFMSW as feedstock.
Article
Biotechnology & Applied Microbiology
Augchararat Klongklaew, Kridsada Unban, Dharman Kalaimurugan, Apinun Kanpiengjai, Hassan Azaizeh, Linda Schroedter, Roland Schneider, Joachim Venus, Chartchai Khanongnuch
Summary: This study demonstrated the bioconversion of lignocellulosic by-product corn stover to L-lactic acid using specific strains of bacteria. The optimal conditions for the highest sugar release and L-LA production were determined. The purification of L-LA from the culture broth was successfully achieved. This study not only presents a feasible process for L-LA production from corn stover but also provides an alternative approach for solving the problem of haze air pollution caused by improper management of corn production residuals.
FERMENTATION-BASEL
(2023)
Article
Agricultural Engineering
Cristina Marzo-Gago, Peter Unger, Roland Schneider, Joachim Venus, Jose Pablo Lopez-Gomez
Summary: This study utilized wheat bran for solid-state fermentation to produce amylase, and successfully achieved high lactic acid yield through hydrolysis and fermentation at a pilot scale using a home-designed reactor. After purification, a high lactic acid recovery rate was obtained.
BIORESOURCE TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Cristina Marzo-Gago, Joachim Venus, Jose Pablo Lopez-Gomez
Summary: This study explored the application of enzymes produced through solid-state fermentation to replace commercial enzymes in the conversion of pasta waste into lactic acid. The results showed that using enzymes produced through solid-state fermentation can increase the yield of lactic acid, while eliminating the need for additional yeast extract.
BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS
(2022)
Article
Biotechnology & Applied Microbiology
Hassan Azaizeh, Hiba Nazmi Abu Tayeh, Roland Schneider, Joachim Venus
Summary: This study investigated the production of lactic acid using carob biomass bagasse, demonstrating the industrial feasibility of the fermentation process. The downstream process achieved high purity of lactic acid, making it suitable for various industrial applications.
FERMENTATION-BASEL
(2022)
Article
Biotechnology & Applied Microbiology
Christiane Terboven, Christian Abendroth, Janin Laumer, Christiane Herrmann, Roland Schneider, Patrice Ramm, Joachim Venus, Matthias Ploechl
Summary: This study aimed to produce succinic acid from lactose concentrate using Actinobacillus succinogenes and Basfia succiniciproducens. The addition of 5 g L-1 yeast extract in lactose-based media resulted in improved succinic acid yield and concentration, showing the importance of supplementing essential nutrients.
FERMENTATION-BASEL
(2021)
