Determination of melamine in milk powder, milk and fish feed by capillary electrophoresis: a good alternative to HPLC

Abstract

The performance of the CZE method evaluated in terms of precision, limits of detection, accuracy and quantification were comparable and in good agreement with those obtained by the HPLC method, with the advantage of shorter analysis time and lower cost.

Investigation of melamine presence in canned tuna fish by capillary zone electrophoresis method

“…On the other hand, low level impurities which caused by the sample structure or presence of melamine under the detection limit, increase the recovery of methods. Similar to our study, other researchers (Yan et al 2009;Wen et al 2010;Gong et al 2013) determined the recovery range of melamine in various foods as 93-104%, 94.5-103.7% and 96-103%, respectively. The limit of detection (LOD) and limit of quantitation (LOQ) were determined as 0.21 mg kg -1 and 0.68 mg kg -1 , respectively.…”

“…Capillary zone electrophoresis has some advantages according to chromatographic methods such as environmental frendly, analysis time and cost effectiveness for the melamine analysis (Cook et al 2005;Wen et al 2010). The results of the melamine analysis were evaluated according to the Codex Alimentarius and TFC.…”

HPTLC-MS analysis of melamine in milk: standardization and validation

“…Melamine (2, 4, 6-triamino-1, 3, 5-triazine, C 3 H 6 N 6 ) is used in the manufacturing of plastics, fertilizers, melamine-formaldehyde resins for surface coatings, laminates, fire retardant, and adhesives (Wen et al 2010). Being enriched with nitrogen (66.7%), melamine is sometimes added to food or animal feed for increasing the apparent protein content (European Food Safety 2007) which is not measurable by Kjeldahl or Dumas method (Chan et al, 2008).…”

Estratégias para aumento de sensibilidade e seletividade de separações cromatográficas em sistemas de análises em fluxo

“…Outros procedimentos empregando eletroforese capilar [112,119], cromatografia de íons [125], cromatografia a gás acoplada a espectrometria de massas [113], voltametria [117], espectrometria de massas MALDI-TOF [126], quimiluminescência [127,128], imunoensaios [129] e espectrometrias Ramam [110] e por fluorescência [130] foram desenvolvidos. Estes procedimentos geralmente envolvem preparo de amostra demorado [126], incluindo etapas de extração e pré-concentração e em alguns casos, alto consumo de solventes orgânicos [120][121][122][123][124].…”

“…Em alguns casos, uma etapa adicional de extração em fase sólida é necessária para a remoção de gorduras [114,[119][120][121]123,124]. Dentre os procedimentos apresentados, o preparo de amostra mais simples para análise de melamina se baseia na dissolução da amostra em uma solução de SDS em tampão fosfato pH 3,0 [114].…”