ANÁLISES FÍSICO-QUÍMICAS E PESQUISA DE FRAUDE NO LEITE INFORMAL COMERCIALIZADO NO MUNICÍPIO DE MOSSORÓ, RN

Abstract

The objective of this work was to analyze the qualityof informal milk commercialized in the city of Mossoró, RN ,by means of physical-chemical analysis and research of fraud.Samples of raw milk commercialized in four neighborhoods ofMossoró were collected during the months of March and April of2006. The collection took place weekly, totaling 32 samples. Thesamples went through physical-chemical analysis (density, fatcontent, total dry extract, solids-non-fat, grade of Dornic acidity,proof of alcohol and freezing point) and research of frauds, suchas: addition of water, of conservatives ( hydrogen peroxide, causticsoda, sodium bicarbonate, potassium bicarbonate) and restorative(sucrose, starch, chloride). From all the analyzed samples, 50%failed at least one of the physical-chemical tests, by not meetingthe standards of current legislation. 50% of the samples did notmeet the freezing point standard, followed by ESD (40.6%), EST(21.9%), density (18.8%) and acidity (6.2%). None of the samplesmet the standard of alcohol proof. From the fraud analysis theaddition of water was are only one found. Most of the milk showedirregularities being unfit for marketing.

Keywords

• Frauds
• informal milk
• physiochemical analyses