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2,6-Diaminopimelic acid (DAPA) in microbial protein quantification of heifers fed different forage sources R. Bras. Zootec.
Couto Filho,Cristovão Colombo de Carvalho; Saliba,Eloísa de Oliveira Simões; Rodriguez,Norberto Mario; Barbosa,Geraldo Sérgio Senra Carneiro; Freitas,Regeane Martins de; Resende,Matheus Pinheiro Diniz.
The objective of this study was to evaluate the flow of nitrogenous compounds, protein degradability, rumen degradation of total carbohydrate and organic matter and microbial efficiency in heifers subjected to diets containing corn silage, sugarcane or Tifton. For this purpose, the 2,6-diaminopimelic acid (DAPA) technique was adopted and analytical procedures for amino acids by HPLC were adapted. Six rumen-fistulated Holstein-Zebu heifers with 480 kg of initial BW and at 24 months of age kept in individual tie stalls were assigned to two 3 × 3 Latin squares. Omasal digesta dry matter and microbial dry matter flows were determined using the isolated, purified and enriched lignin (LIPE®) and DAPA markers, respectively. Isolated bacteria from rumen showed on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corn silage; Flow of nitrogen compounds; HPLC; Microbial efficiency; Protein degradability; Sugarcane.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000500180
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A comparative chemical and pharmacological study of standardized extracts and vanillic acid from wild and cultivated Amburana cearensis A. C. Smith. Repositório Alice
LEAL, L. K. A. M.; PIERDONÁ, T. M.; GÓES, J. G. S.; CANUTO, K. M.; SILVEIRA, E. R.; BEZERRA, A. M. E.; VIANA, G. S. B..
The objectives of this work were to carry out a comparative chemical study and to evaluate the antinociceptive and anti-inflammatory activities of ethanol extracts (EtOHE) and vanilic acid (VA) from cultivated and wild Amburana cearensis A.C. Smith (Fabaceae), an endangered species used in Northeast Brazil for the treatment of asthma. The HPLC analysis of EtOHE, showed that coumarin (CM) and VA were the major constituents from the cultivated plant, while in the extract from the wild plant the major constituents were amburoside A (AMB) and CM. Pharmacological tests were performed with male Swiss mice or male Wistar rats acutely administered with 100?400 mg/kg, p.o. of EtOHEs or 12.5?50 mg/kg, p.o. of VA. EtOHEs from A. cearensis with 4, 7 or 9 months of...
Tipo: Separatas Palavras-chave: Amburana cearensis; HPLC; Antinociceptive activity.; Anti-inflammatory activity; Vanillic acid..
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/904909
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A comparison between enzyme immunoassay and HPLC for ochratoxin A detection in green, roasted and instant coffee BABT
Fujii,Simone; Ono,Elisabete Yurie Sataque; Ribeiro,Ricardo Marcelo Reche; Assunção,Fernanda Garcia Algarte; Takabayashi,Cássia Reika; Oliveira,Tereza Cristina Rocha Moreira de; Itano,Eiko Nakagawa; Ueno,Yoshio; Kawamura,Osamu; Hirooka,Elisa Yoko.
An indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) for ochratoxin A (OTA) detection in green, roasted and instant coffees was developed using anti-OTA monoclonal antibody. Immunological reagents prepared were OTA-BSA (4.76 mg/mL), anti-OTA.7 MAb (2x10³-fold dilution) and HRP-anti IgG (10³-fold dilution). The detection limit was 3.73 ng OTA/g and correlation coefficients (r) between this immunoassay and high performance liquid chromatography were 0.98 for green coffee, 0.98 for roasted and 0.86 for instant. OTA levels detected by ic-ELISA were higher than by HPLC, with ELISA/HPLC ratio of 0.66 - 1.46 (green coffee), 0.96 - 1.11 (roasted) and 0.93 - 1.82 (instant). ELISA recoveries for OTA added to coffee (5 - 70 ng/g) were 81.53 % for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ochratoxin; Immunoassay; HPLC; Monoclonal antibody; Coffee.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200020
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A method for fast determination of epigallocatechin gallate (EGCG), epicatechin (EC), catechin (C) and caffeine (CAF) in green tea using HPLC Ciênc. Tecnol. Aliment.
Saito,Samuel T.; Welzel,Albert; Suyenaga,Edna S.; Bueno,Francie.
Tea has been considered a medicine and a healthy beverage since ancient times, but recently it has received a great deal of attention because of its antioxidant properties. Green tea polyphenols have demonstrated to be an effective chemopreventive agent. Recently, investigators have found that EGCG, one of the green tea catechins, could have anti-HIV effects when bound to CD4 receptor. Many factors can constitute important influences on the composition of tea, such as species, season, age of the leaf, climate, and horticultural practices (soil, water, minerals, fertilizers). This paper presents an HPLC analytical methodology development, using column RP-18 and mobile phase composed by water, acetonitrile, methanol, ethyl acetate, glacial acetic acid...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HPLC; EGCG; Catechin; Camellia sinensis; Brazilian green tea.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612006000200023
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A multivariate approach to differentiate yerba mate (Ilex paraguariensis) commercialized in the southern Brazil on the basis of phenolics, methylxanthines and in vitro antioxidant activity Ciênc. Tecnol. Aliment.
ZIELINSKI,Acácio Antonio Ferreira; ALBERTI,Aline; BONA,Evandro; BORTOLINI,Débora Gonçalves; BENVENUTTI,Laís; BACH,Fabiane; Demiate,Ivo Mottin; NOGUEIRA,Alessandro.
Abstract The consumption of yerba mate beverages is related to several health benefits. These desirable properties are mainly due to the bioactive compounds. However, the levels of those compounds are directly affected by factors such as geographical origin. This study aimed to use chemometrics to evaluate the antioxidant compounds of yerba mate (consumed as chimarrão) marketed in southern Brazil. Neochlorogenic acid and caffeine were the main bioactive compounds found in this type of yerba mate beverage (chimarrão). The dataset was analyzed by chemometrics, and principal component analysis using the first three principal components explained 61.30% of the total variance. Hierarchical cluster analysis suggested three clusters, with cluster 1 containing the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioactive compounds; Geographical origin; Chimarrão; HPLC; Pattern recognition.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612020005006204
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Acaricidal activity of leaves of Morus nigra against the cattle tick Rhipicephalus microplus Arq. Bras. Med. Vet. Zootec.
Dantas,A.C.S.; Freire,D.P.; Souza,G.R.; Almeida,J.R.G.S.; Rolim,L.A.; Castro,R.N.; Horta,M.C..
ABSTRACT The acaricidal activity of crude ethanolic extract and fractions from the leaves of Morus nigra (Moraceae) was carried out on female cattle ticks Rhipicephalus microplus, using the adult immersion test. The mortality and fertility of females exposed to different concentrations of hexane, chloroform and ethyl acetate fractions, as well as ethanolic extract of M. nigra with concentrations of 5, 10 and 25mg/ml were evaluated using three treatment groups, two control groups and triplicate tests. The study also identified the main phenolic compounds of the extract and fractions of this species by HPLC. The chloroform fraction of leaves of M. nigra (25mg/mL) showed the best results for this species, obtaining 62.6% of inhibition of oviposition, 39.3% of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tick control; Acaricide; Plant extract; Mulberry; HPLC.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300523
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Actividad antimicrobiana y caracterización fenólica de extractos de cálices de jamaica (Hibiscus sabdariffa L.). Colegio de Postgraduados
Morales Cabrera, Mercedes.
En este estudio se evaluó la actividad antimicrobiana de los extractos etanólicos, metanólicos y acuosos (frío y caliente) de cálices deshidratados de Hibiscus sabdariffa L. de cinco genotipos, sobre S. typhimurium (ATCC14028) y S. cholleraesuis (ATCC10708), se empleó el método difusión en agar. Se determinó la concentración mínima inhibitoria (CMI) y la concentración mínima bactericida (CMB) por dilución. Se analizó la influencia del pH en la actividad antimicrobiana. Así mismo se realizó la caracterización fenólica de los extractos etanólicos. El efecto antimicrobiano fue variable; los extractos de la variedad Alma blanca (cálices verdes), presentaron el mayor efecto antimicrobiano (diámetros de inhibición de12.5 a 19.5 mm) sobre ambos serotipos de...
Palavras-chave: CMI; CMB; PH; Salmonella; Compuestos fenólicos; HPLC; MIC; MCB; Phenolic compounds; Fitopatología; Maestría.
Ano: 2011 URL: http://hdl.handle.net/10521/568
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Actividad antimicrobiana y caracterización fenólica de extractos de cálices de jamaica (Hibiscus sabdariffa L.). Colegio de Postgraduados
Morales Cabrera, Mercedes.
En este estudio se evaluó la actividad antimicrobiana de los extractos etanólicos, metanólicos y acuosos (frío y caliente) de cálices deshidratados de Hibiscus sabdariffa L. de cinco genotipos, sobre S. typhimurium (ATCC14028) y S. cholleraesuis (ATCC10708), se empleó el método difusión en agar. Se determinó la concentración mínima inhibitoria (CMI) y la concentración mínima bactericida (CMB) por dilución. Se analizó la influencia del pH en la actividad antimicrobiana. Así mismo se realizó la caracterización fenólica de los extractos etanólicos. El efecto antimicrobiano fue variable; los extractos de la variedad Alma blanca (cálices verdes), presentaron el mayor efecto antimicrobiano (diámetros de inhibición de12.5 a 19.5 mm) sobre ambos serotipos de...
Palavras-chave: CMI; CMB; PH; Salmonella; Compuestos fenólicos; HPLC; MIC; MCB; Phenolic compounds; Fitopatología; Maestría.
Ano: 2011 URL: http://hdl.handle.net/10521/568
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Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test Electron. J. Biotechnol.
Wang,Ping; Nong,Xu-Hua; Ge,Jie-Hong.
Nonylphenol ethoxylates (NPEOs), which are widely used for industrial and domestic purposes, exert adverse effects on wildlife after being used and discharged into the environment. However, their ultimate biodegradability and biodegradation pathway remains unclear. In this study, the aerobic degradability of nonylphenol ethoxylates (NPEOs) by the acclimated microorganisms in active sludge was examined using shaking-flask tests. The degradation of benzene rings in NPEOs was determined using UV spectroscopy and high performance liquid chromatography (HPLC). Results showed that more than 80% of benzene rings were removed after 8-10 days of degradation, and the majority of NPEOs were also removed after 9 days of degradation, indicating NPEOs and the benzene...
Tipo: Journal article Palavras-chave: Aerobic biodegradation; Degradation pathway; ESI-MS; HPLC; Nonylphenol ethoxylates.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400001
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Aflatoxin M1 in samples of "minas" cheese commercialized in the city of Belo Horizonte - Minas Gerais/Brazil Ciênc. Tecnol. Aliment.
PRADO,Guilherme; OLIVEIRA,Marize Silva; PEREIRA,Maria Lúcia; ABRANTES,Fabiana Moreira; SANTOS,Luciana Gonçalves; VELOSO,Thais.
Milk products such as cheeses may be contaminated by aflatoxin M1 when dairy cattle have consumed feeds contaminated with aflatoxin B1. Samples of "Minas" cheeses (fresh, canastra and standard) were collected by the Inspection Service in the Mercado Central in Belo Horizonte city, Minas Gerais - Brazil. A purified extract was obtained by extraction with dichloromethane followed by a washing with n-hexane and immunoaffinity column purification. The quantification of aflatoxin M1 was done by high performance liquid chromatography (HPLC) using a fluorescence detector. Recoveries were about 75%. In 56 of the 75 samples (74.7%), the presence of aflatoxin M1 was detected in concentrations ranging between 0.02 and 6.92ng/g of cheese. In the positive cases ( >...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxin M1; Cheese; HPLC.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612000000300020
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Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus Biol. Res.
ROJAS,JOSÉ MIGUEL; OJEDA,F. PATRICIO.
A serotonergic pathway is apparently involved in parasite-host interactions. Previous studies conducted in our laboratory showed increased rates in oxygen consumption and alterations in body posture in the crab Hemigrapsus crenulatus parasitized by the acanthocephalan, Profilicollis antarcticus. Such changes may be related to the functions described for biogenic amines in crustaceans. During the infective stage the acanthocephalans live freely in the hemocelomic cavity, suggesting that the possible alteration induced by biogenic amines may be related to their neurohormonal function in crustaceans. To test whether the presence of P. antarcticus produced neurohormonal changes in its intermediate host, H. crenulatus, we analyzed serotonin and dopamine levels...
Tipo: Journal article Palavras-chave: Acanthocephalans; Biogenic amines; HPLC; Parasite-host interaction; Parasite transmission.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200015
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Anthocyanins standards (cyanidin-3-O-glucoside and cyanidin-3-O-rutinoside) isolation from freeze-dried açaí (Euterpe oleraceae Mart.) by HPLC Ciênc. Tecnol. Aliment.
Gouvêa,Ana Cristina Miranda Senna; Araujo,Manuela Cristina Pessanha de; Schulz,Daniel Filisberto; Pacheco,Sidney; Godoy,Ronoel Luis de Oliveira; Cabral,Lourdes Maria Corrêa.
Availability of analytical standards is a critical aspect in developing methods for quantitative analysis of anthocyanins. The anthocyanins cyanidin-3-O-glucoside and cyanidin-3-O-rutinoside were isolated from samples of freeze-dried açaí (Euterpe oleraceae Mart.), which is a round and purple well-known palm fruit in Brazil, and then used as standards. The isolation of the anthocyanins was performed by High Performance Liquid Chromatography (HPLC), using an adapted six-channel selection valve. The identification of anthocyanin pigments in açaí was based on mass spectrometric data for molecular ions and MS-MS product ions and on previous published data. After the collection procedure, standards with a high purity grade were obtained and an external standard...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthocyanins; Standard; Isolation; Açaí; Euterpe oleraceae Mart.; HPLC.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612012000100006
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Antidiabetic activity of aqueous extract of Sigesbeckia orientalis (St. Paul’s Wort) in alloxan-induced diabetes model BJPS
Asif,Muhammad; Saleem,Mohammad; Yousaf,Sobia; Saadullah,Malik; Zafar,Memoona; Khan,Rizwan Ullah; Yuchi,Alamgeer.
The current study evaluated antidiabetic and antihyperlipidemic activities of aqueous extract of Sigesbeckia orientalis L. (St. Paul’s Wort) (AESO) in an alloxan-induced diabetic rat model. Following OECD guidelines safe doses of AESO were assessed in rats for the main study. Serum/bood glucose, α-amylase, and lipids levels and histopathological evaluations were conducted to assess antidiabetic and associated antihyperlipidemic efficacies of AESO. AESO was found to be safe up to the dose of 2000 mg/kg. Significant (p < 0.05) reduction in glucose and lipids (total cholesterol, triglycerides, low-density lipoproteins) levels was observed in AESO treatment groups. Serum α-amylase, high-density lipoproteins, and total body weight was increased significantly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antidiabetic; Sigesbeckia orientalis L; Alloxan; Antihyperlipidemic; HPLC.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100607
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Antifungal activity of different neem leaf extracts and the nimonol against some important human pathogens BJM
Mahmoud,D.A; Hassanein,N.M; Youssef,K.A; Abou Zeid,M.A.
This study was conducted to evaluate the effect of aqueous, ethanolic and ethyl acetate extracts from neem leaves on growth of some human pathogens (Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Aspergillus terreus, Candida albicans and Microsporum gypseum) in vitro. Different concentrations (5, 10, 15 and 20%) prepared from these extracts inhibited the growth of the test pathogens and the effect gradually increased with concentration. The 20% ethyl acetate extract gave the strongest inhibition compared with the activity obtained by the same concentration of the other extracts. High Performance Liquid Chromatography (HPLC) analysis of ethyl acetate extract showed the presence of a main component (nimonol) which was purified and chemically...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Azadirachta indica; Aqueous and organic extracts; HPLC; Fungal inhibitory effect.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300021
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ANTIFUNGAL ACTIVITY OF NEEM (Azadirachta indica: MELIACEAE) EXTRACTS AGAINST DERMATOPHYTES Acta biol.Colomb.
OSPINA SALAZAR,Daniel Iván; HOYOS SÁNCHEZ,Rodrigo Alberto; OROZCO SÁNCHEZ,Fernando; ARANGO ARTEAGA,Myrtha; GÓMEZ LONDOÑO,Luisa Fernanda.
In order to assess the antifungal activity of methanolic extracts from neem tree (Azadirachta indica A. Juss.), several bioassays were conducted following M38-A2 broth microdilution method on 14 isolates of the dermatophytes Trichophytonmentagrophytes, Trichophyton rubrum, Microsporum canis and Epidermophyton floccosum. Neem extracts were obtained through methanol-hexane partitioning of mature green leaves and seed oil. Furthermore, high performance liquid chromatography (HPLC) analyses were carried out to relate the chemical profile with their content of terpenoids, ofwidely known antifungal activity. The antimycotic Terbinafine served as a positive control. Results showed that there was total growth inhibition of the dermatophytes isolates at minimal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HPLC; Neem; Microbial sensitivity tests; Minimum inhibitory concentration; Terpenoids.
Ano: 2015 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000300017
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Antimicrobial and antibiofilm activities of phenolic compounds extracted from Populus nigra and Populus alba buds (Algeria) BJPS
Nassima,Boumghar; Nassima,Behidj; Riadh,Ksouri.
The interest of this work is the discovery of new antimicrobial agents of plant origin to inhibit the formation of microbial biofilms. The present research was conducted to identify and quantify the phenolic compounds extracted from Populus nigra and Populus alba buds harvested in the area of Tizi-Ouzou (Algeria), and to evaluate their antimicrobial and antibiofilm activity. High performance liquid chromatography (HPLC) was performed to identify the phenolic compounds in the ethyl acetate fraction of P. nigra and the methanolic extracts of P. nigra and P. alba. The antimicrobial activity of the crude extracts and the fractions of these two species was tested against 11 microorganisms, using the disk diffusion method, while the antibiofilm effect of certain...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Populus nigra; Populus alba; HPLC; Polyphenols; Antimicrobial activity; Antibiofilm activity.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100563
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Antioxidant activity and total phenol content of blackberries cultivated in a highland tropical climate Agronomy
Guedes, Mayara Neves Santos; Pio, Rafael; Maro, Luana Aparecida Castilho; Lage, Fabíola Fonseca; Abreu, Celeste Maria Patto de; Saczk, Adelir Aparecida.
Blackberries are an important option for the diversification of fruit crops. However, there is currently no literature regarding plant cultivation in high-altitude tropical climates. Knowledge of the phenolic composition of blackberries is essential because variations in the levels of these components may exist between cultivars and may depend on environmental conditions. High performance liquid chromatography (HPLC) was used to evaluate the total phenol content of different blackberry cultivars (Arapaho, Brazos, Cainguangue, Cherokee, Choctaw, Comanche, Ébano, Guarani, Tupy and Xavante). Free radical scavenging activity in these cultivars was assayed using a DPPH test. The HPLC-UV chromatogram of blackberry fruit extracts at 280 nm revealed the presence...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.01.03.00-8 total phenols; Free radicals; HPLC; Rubus spp. Fitotecnia.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/28413
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APLICACIÓN DEL HPLC EN EL ESTABLECIMIENTO DEL PERIODODE LATENCIA DE LA OXITETRACICLINA EN MÚSCULO DE CAMARÓN(Litopenaeus vannamei) EN UN SISTEMA DE PRODUCCIÓNSEMI-INTENSIVO EN CUBA Rev Salud Anim.
Escobar,A; Faure,R; Sosa,Dayana; Betancourt,A; Hernández,Damaiky.
Se desarrolló una metodología para la determinación de oxitetraciclina en músculo de camarón por cromatografía líquida de alta resolución empleando columna de fase reversa y detección UV a 340 nm. La extracción se desarrolló con una solución Mcllvaine-EDTA y los extractos fueron purificados empleando columnas de extracción fase sólida (C18-500mg-6mL). El método presentó un recobrado entre 78.2±9.9 % con una precisión menor del 10% en las concentraciones de 200 y 400 ng/g, la linealidad mostró un coeficiente de correlación mayor de 0.99 y el límite de detección fue 105 ng/g, Se estableció el periodo de latencia de la oxitetraciclina en músculo de camarones (Litopenaeus vannamei) entre 14-20 días cuando se suministra el alimento medicamentado a una dosis de...
Tipo: Journal article Palavras-chave: Oxitetraciclina; HPLC; Camarón; Periodo de latencia.
Ano: 2010 URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2010000200005
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Application de l’indice de composition pigmentaire ICBC pour Manche-Atlantique aux masses d’eau méditerranéennes ArchiMer
Lampert, Luis; Hernandez Farinas, Tania.
Suite aux  études concernant la mise en place d’un indice de composition pigmentaire dans les eaux de Manche-Atlantique (Lampert, 2018) et en Méditerranée (Goffart, 2018), il a été convenu de procéder à un échange de données pour ces deux façades afin d’évaluer le potentiel de ces deux indicateurs sur les façades pour lesquelles ils n’ont pas été conçus. Nous avons donc, appliqué l’indice de composition ICBC aux données obtenues entre 2009 et 2017 en Méditerranée (ICBCmed), défini une grille de classement pour l’EQR IC et finalement classé les masses d’eau afin d’inclure l’indice de composition dans l’indicateur phytoplancton de Méditerranée. Cet ICBCmed a été calculé pour les 15 points échantillonnés. Le résultat du classement est cohérent avec les...
Tipo: Text Palavras-chave: MEDITERRANEE; DCE; HPLC; PHYTOPLANCTON; INDICE DE COMPOSITION; ICBC.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00469/58111/60531.pdf
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Assessment of human health risk associated with the presence of pesticides in chicken eggs Ciênc. Tecnol. Aliment.
HAMID,Almas; YAQUB,Ghazala; AHMED,Sajid Rashid; AZIZ,Nida.
Abstract The presence of pesticides in the environment is highly toxic to environment and human health. Aim of the study was determination, quantification and assessment of associated health risk due to presence of pesticide residues in chicken eggs using high pressure liquid chromatography. HPLC method was successfully employed and validated. From collected samples pesticides were extracted in presence of petroleum ether and acetonitrile. Bifenthrin and Difenoconazole residues were found in all samples with different concentration exceeding maximum residue limits (MRL) of Codex Alimentarius Commission. However imidacloprid was not detected in any sample. Concentration of bifenthrin in house egg samples ranged from 0.256206 to 4.112387 mg/kg while in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organochlorine pesticides; HPLC; Chicken eggs; Poultry samples; Maximum residue limits.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000300378
Registros recuperados: 138
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