Fatty Acid Methyl Ester (FAME) Succession in Different Substrates as Affected by the Co-Application of Three Pesticides

Cardinali, Alessandra; Pizzeghello, Diego; Zanin, Giuseppe

doi:10.1371/journal.pone.0145501

Cited by 9 publications

(3 citation statements)

References 40 publications

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“…Biomarker fatty acids were used to examine possible alterations in communities of bee gut microorganisms. Biomarkers were: iso‐ and anteiso‐branched fatty acids (14:0i, 15:0i, 15:0a, 16:0i, 16:0a, 17:0i and 17:0a) for Gram‐positive bacteria; fatty acids ( cy 17:0, cy 19:0, 18:1ω7c and 18:1ω9c) for Gram‐negative bacteria; and representing groups of unresolved Gram‐negative biomarkers, fatty acids SF3 (16:1ω7c/16:1ω6c), SF7 (19:1ω6c/18:1ω9t and or 18:1ω12t), SF8 (18:1 ω7c/18:1 ω6c), and for fungi SF5 (18:2ω6,9c/18:0a) …”

Section: Methodsmentioning

confidence: 99%

Alterations in honey bee gut microorganisms caused by Nosema spp. and pest control methods

Díaz

del‐Val

Ayala

et al. 2018

Pest Management Science

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Section: Methodsmentioning

confidence: 99%

Alterations in honey bee gut microorganisms caused by Nosema spp. and pest control methods

Díaz

del‐Val

Ayala

et al. 2018

Pest Management Science

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“…An instrument to assess the changes in a soil microbial community structure is the study of fatty acid methyl esters (FAMEs) evolution. A FAME composition provides qualitative and quantitative insights into the structure of the microbial community (Cardinali et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

New approach to soil fertility management: Biogeosystem Technique methodology (critical review)

Kalinitchenko,

Swidsinski,

Glinushkin

et al. 2024

Land Degrad Dev

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A standard management soil priming effect is short term. A current soil plowing, irrigation and waste utilization soil priming action shortcomings elimination is needed. The Biogeosystem Technique (BGT*) priming action system was developed for soil management to provide a higher‐level priming effect. The BGT* is focused on a soil biogeochemical cycle activation similar to the biodegradation in a colon of a live organism as an efficient benchmark bioreactor. Fluorescence in situ hybridization showed a cooperation of bacteria within polymicrobial biofilms and a probability of the polymicrobial biofilms biodegradation process acceleration and soil organic matter (SOM) regime improvement. The soil priming actions the BGT* technological management is capable of providing are based on the BGT* constituents, whose essence, applications and corresponding detailed data are presented in available studies. The main BGT* components are as follows. The illuvial horizon intra‐soil milling artificial soil aggregation (a form of crumbling and mixing) priming action provides the soil structuring, a SOM content increase and an annual yield increment direct priming effects. A long‐term secondary priming effect is a technology life cycle with higher profitability compared to the standard moldboard, chiseling and three‐tier plowing. The intra‐soil pulse sequential‐discrete watering priming action is performed through water injection into the soil in sequence. A next water spreading provides the soil aggregate stability, the seedling length and weight increment direct priming effect and a water‐saving secondary priming effect. The intra‐soil dispersed liquid, paste‐like and loose granular nutrition and structuring matter intra‐soil milling application priming action ensures soil structuring direct priming effects, heavy metals passivation and long‐term yield increment secondary priming effects. The BGT* methodology could be useful for soil management improvement.

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“…It is a reversible reaction and stoichiometry (Luković, Knežević-Jugović, & Bezbradica, 2011). Besides fatty acid alkyl ester use as a fuel, it also used as solvent for oil recovery surfactant, pesticides, asphalt rejuvenator, detergent, and cosmetics industry (Cardinali, Pizzeghello, & Zanin, 2015;Karis et al, 2022;Keng et al, 2009). The key benefits of using lipases as a biocatalyst include mild reaction conditions, fast recovery of glycerol without subsequent purifying and producing chemical waste, and high-purity product (Sandoval et al, 2017).…”

Section: Enzymatic Esterification/transesterification/mentioning

confidence: 99%

Enzymatic pretreatment of rice bran acid oil before ?-oryzanol recovery

Yahya

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This study aims to apply enzymatic reactions for pretreating the major byproduct of rice bran oil (RBO) industry, rice bran acid oil (RBAO) before ?-oryzanol recovery. RBAO contains free fatty acids (FFAs), glycerides, and is rich in the super-antioxidant, ?-oryzanol. As a primary step to recover ?-oryzanol from RBAO, glycerides must be removed because of having similar polarity with ?-oryzanol. This study is conducted in two parts, hydrolysis and esterification/transesterification. In the first part, enzymatic hydrolysis. The study evaluates the performance of operating conditions using one factor at a time (OFAT) on the reaction time, temperature, lipase loading, water:RBAO ratio, and speed where glycerides removal and ?-oryzanol loss are measured as responses. From these, Face-centered central composite rotatable design (FCCD) was used to investigate the effects of three independent variables: time, temperature, and water:RBAO ratio, and their interactions on the responses: glyceride removal, ?-oryzanol loss, and FFAs production, and to determine the statistical models describing their relationships. In addition, by applying the desirability function approach, the optimal location was identified, corresponding to maximal glyceride removal with an imposed upper limit of 35% ?-oryzanol loss. Lastly, the last section is the confirmation of the validity of the model and at an established optimal condition of 22 h, 48.5 ?C and 1:1 water:RBAO ratio, confirmed the validity of the models: glyceride removal approached completion (99%), ?-oryzanol loss was as low as 32%, and the FFAs production was 7375%. Then the second part is enzymatic esterification/transesterification. First is to evaluate the performance of operating conditions using OFAT of ethanol to RBAO molar ratio, temperature, time of reaction, lipase loading, and speed on the glycerides removal, Fatty acid ethyl ester (FAEE/biodiesel), ?-oryzanol loss, and FFAs remaining. Two optimal conditions at 40?C, 3:1 and 5:1 mol ratio of ethanol to RBAO,10% of lipase loading,200 rpm, and 18 and 24 h reaction time, respectively with >98% glyceride removal. Then, the extraction of ?-oryzanol from FAEE using aqueous ethanolic NaOH is conducted and resultant that around 90% of ?-oryzanol can be extracted at 2M. As a primary step to recover ?-oryzanol from RBAO, glycerides must be removed by conversion into more easily separable components such as FFAs or FAEE. The results of this study demonstrated that enzymatic hydrolysis and esterification/transesterification are promising methods for glyceride removal prior to recovery of ?-oryzanol from RBAO and that the statistical models gave accurate predictions of responses and would be useful for further industrial design of the process also is environmentally friendly biocatalysts. Further modifications in the process may be needed to reduce the content of glycerides. Moreover, the losses of ?-oryzanol from these two methods are much better than the conventional method and are interesting to explore further.�

show abstract

Fatty Acid Methyl Ester (FAME) Succession in Different Substrates as Affected by the Co-Application of Three Pesticides

Cited by 9 publications

References 40 publications

Alterations in honey bee gut microorganisms caused by Nosema spp. and pest control methods

Alterations in honey bee gut microorganisms caused by Nosema spp. and pest control methods

New approach to soil fertility management: Biogeosystem Technique methodology (critical review)

Enzymatic pretreatment of rice bran acid oil before ?-oryzanol recovery

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