Heterogeneous catalytic transformations for environmentally friendly production

1999 ◽  
Vol 189 (2) ◽  
pp. 163-183 ◽  
Author(s):  
R.A Sheldon ◽  
R.S Downing
Keyword(s):  
Environmentally Friendly ◽  
Catalytic Transformations ◽  
Heterogeneous Catalytic ◽  
Environmentally Friendly Production

scholarly journals Towards Sustainable Private Labels in an Autonomous Community during COVID-19—Analysis of Consumer Behavior and Perception on the Example of Tenerife

2021 ◽  
Vol 13 (13) ◽  
pp. 7467
Author(s):  
Maksymilian Czeczotko ◽  
Hanna Górska-Warsewicz ◽  
Wacław Laskowski ◽  
Barbara Rostecka
Keyword(s):  
Consumer Behavior ◽  
Research Question ◽  
Environmentally Friendly ◽  
Food Products ◽  
Organic Production ◽  
Autonomous Community ◽  
Private Labels ◽  
Chi Square ◽  
And Cluster Analysis ◽  
Environmentally Friendly Production

Our study aimed to analyze consumer behavior and perception towards private labels (PLs) in Tenerife as an autonomous community during COVID-19, with special attention given to sustainability aspects. The research was conducted on a sample of 500 adults purchasing PLs using quota selection and the CAWI method. We formulated four research questions related to factors of PL choice, the relationship between frequency of PL purchases, consumers’ age and income, perceived changes in PLs, and evaluation of PL products including sustainability. The latter research question referred to such product characteristics as local and environmentally friendly production, organic production, and production according to traditional technologies using only natural ingredients. For a detailed analysis of consumer behavior, we used Pearson’s chi-square test, the rho-Spearman correlation coefficient, and cluster analysis. The most important factors for purchasing PL products were lower prices compared to leading brands, attachment to a given chain, and the feeling of safety and trust in PL products. The frequency of purchase of PL food products, except for alcohol, significantly negatively correlates with age, which means that the purchase of PLs from the analyzed product categories decreases with age. The increased availability and improved image and quality of PLs were identified as the most important changes in PLs. PL food products were rated by consumers as fresh, minimally processed and with quality certificates. Environmentally friendly production methods, nutritional value, and origin from an area close to home were also indicated.

scholarly journals Branching features of apple cultivars in integrated and organic production technology

2018 ◽  
Vol 24 (3-4) ◽  
Author(s):  
P. Dremák ◽  
Á. Csihon ◽  
I. Gonda
Keyword(s):  
Organic Farming ◽  
Production Technology ◽  
Production System ◽  
Production Systems ◽  
Environmentally Friendly ◽  
Organic Production ◽  
Integrated System ◽  
Integrated Production ◽  
Apple Cultivars ◽  
Environmentally Friendly Production

In our study, vegetative characteristics of 39 apple cultivars were evaluated in environmentally friendly production systems. Numbers of the branches of the central leader in different high zones were shown. According to our results, number of the branches of the axis was probably larger in the integrated production system, compared to the organic one, which is related to the conditional status of the trees. Based on our experiences training and maintaining canopies in integrated system was easier, as relative more extensive canopies were needed in organic farming.

scholarly journals Convenient and Environmentally Friendly Production of Isostearic Acid with Protonic Forms of Ammonium Cationic Zeolites

2017 ◽  
Vol 119 (12) ◽  
pp. 1700262 ◽  
Author(s):  
Majher I. Sarker ◽  
Renee J. Latona ◽  
Robert A. Moreau ◽  
Daniel Micheroni ◽  
Kerby C. Jones ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Isostearic Acid ◽  
Environmentally Friendly Production

ChemInform Abstract: Heterogeneous Catalytic Transformations of Natural Camphene

ChemInform ◽  
2010 ◽  
Vol 33 (52) ◽  
pp. no-no
Author(s):  
N. F. Salakhutdinov ◽  
V. A. Barkhash
Keyword(s):  
Catalytic Transformations ◽  
Heterogeneous Catalytic

scholarly journals Engineering central pathways for industrial-level D-(-)-acetoin biosynthesis in Corynebacterium glutamicum

2020 ◽  
Author(s):  
Lingxue Lu ◽  
Yufeng Mao ◽  
Mengyun Kou ◽  
Zhenzhen Cui ◽  
Biao Jin ◽  
...  
Keyword(s):  
Corynebacterium Glutamicum ◽  
Citrate Synthase ◽  
Value Added ◽  
Environmentally Friendly ◽  
Product Yield ◽  
Microbial Fermentation ◽  
Near Future ◽  
Optically Pure ◽  
Environmentally Friendly Production ◽  
Competitive Product

Abstract Background: Acetoin, especially the optically pure L-(+)- or D-(-)-enantiomer, is a high-value-added bio-based platform chemical and important potential pharmaceutical intermediate. Over the past decades, intense efforts have been devoted to the production of acetoin through green biotechniques. However, efficient and economical methods for the production of optically pure acetoin enantiomers are rarely reported. Previously, we systematically engineered the GRAS microorganism Corynebacterium glutamicum to efficiently produce D-(-)-acetoin from glucose. Nevertheless, its yield and average productivity were still unsatisfactory for industrial bioprocesses. Results: In this study, cellular carbon fluxes in the acetoin producer CGR6 were further redirected toward acetoin synthesis using several metabolic engineering strategies, including blocking anaplerotic pathways, attenuating key genes of the TCA cycle and integrating additional copies of the alsSD operon into the genome. Among them, the combination of attenuation of citrate synthase and inactivation of phosphoenolpyruvate carboxylase showed a significant synergistic effect on acetoin production. Finally, the optimal engineered strain CGS11 produced a titer of 102.45 g/L acetoin with a yield of 0.419 g/g glucose at a rate of 1.86 g/L/h in a 5 L fermenter. The optical purity of the resulting D-(-)-acetoin surpassed 95%. To the best of our knowledge, this is the highest titer of highly enantiomerically enriched D-(-)-acetoin, together with a competitive product yield and productivity, achieved in a simple, green process without expensive additives or substrates. This process therefore opens the possibility to achieve easy, efficient, economical and environmentally-friendly production of D-(-)-acetoin via microbial fermentation in the near future. Conclusion: To the best of our knowledge, this is the highest titer of highly enantiomerically enriched D-(-)-acetoin, together with a competitive product yield and productivity, achieved in a simple, green processes without expensive additives or substrates. This process therefore opens the possibility to achieve easy, efficient, economical and environmentally-friendly production of D-(-)-acetoin via microbial fermentation in the near future.

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