{"id":1140,"date":"2024-08-15T03:28:19","date_gmt":"2024-08-14T20:28:19","guid":{"rendered":"http:\/\/www.tneutron.net\/pangan\/?p=1140"},"modified":"2024-08-13T07:56:48","modified_gmt":"2024-08-13T00:56:48","slug":"principles-methods-quality-chip","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/pangan\/principles-methods-quality-chip\/","title":{"rendered":"Principles and Methods Quality Chip"},"content":{"rendered":"

a) Examination of the situation by way of organoleptic color, smell, taste and texture.<\/span>
\n b) Determination of water content with the oven method, the principle of weight loss on heating to 105oC regarded as the water content contained in the sample.<\/span> Distillation method with the principle of separation of water with organic solvents azeotrapik<\/span>
\n c) Determination of ash content with the principles of the ashing process organic matter is decomposed into water and CO2, but no organic material.<\/span>
\n d) Determination of food coloring with polyamide column method with dye absorption principle example by dissolving polyamide with dye that has been free of the impurities in methanolic NaOH.<\/span> In particular pH and after concentrates, benchmarking dye with the dye sample standard paper chromatography performed.<\/span>
\n e) Determination of artificial sweetener (saccharin) with Test Resolsinol, the principle will Saccharin gives green fluorescence when reacted with NaOH resolsinol and excessive.<\/span>
\n f) The determination of artificial sweeteners (cyclamate) with precipitation, with the principle of formation of a white precipitate from the reaction between BaCl2 Na2SO4 (derived from the reaction between cyclamate with NaNO2 in an atmosphere of strong acid) showed cyclamate.<\/span>
\n g) Metal Contamination of Cadmium (Cd) and lead (Pb), namely destruction example by dry ashing at a temperature of 450 \u00b0 C followed by dissolution in acid solution.<\/span> Dissolved metal calculated using the tool Atomic Absorption Spectrophotometer (AAS) with a maximum wavelength of 228.8 nm to 283.3 nm for Cd and Pb.<\/span>
\n h) metal contaminants Mercury (Hg) is a reaction between mercury compounds with NaBH4 or SnCl2 under acidic conditions to form the atomic gas Hg.<\/span> Total Hg formed Hg proportional to the absorbance is read using Atomic Absorption Spectrophotometer (AAS) without flame at a wavelength maximum of 253.7 nm.<\/span>
\n i) microbial contamination: Figures plates that total aerobic bacterial growth mesophyll after sample was incubated in the appropriate seeding for 48 hours at a temperature (35 \u00b1 1) \u00b0 C.<\/span>
\n j) microbial contamination: Escherichia coli is Escherichia coli growth is characterized by the formation of gas in the Durham tube, followed by biochemical tests and further referenced in Table APM (Score Most Likely).<\/span><\/p>\n

Sampling method in accordance with SNI 19-0428-1989, sampling solids.<\/span>
\n Equipment sample preparation<\/strong><\/span>
\n – Blender;<\/span>
\n – Mortar porcelain;<\/span>
\n – Spatula.<\/span><\/p>\n

How solid sample preparation<\/strong><\/span>
\n<\/strong> Take for example the diagonal system, collected to obtain a homogeneous sample.<\/span> Make into a rectangular shape, then divide into two diagonally into four parts.<\/span> Take two parts facing each other, and then for four more and the next is to do like the workmanship above in order to obtain sufficient quantities for analysis.<\/span> If the shape of the example is not smooth, grind the sample until smooth.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

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