Normally, capsicum oleoresin is removed from paprika, then the hot compound capsaicin is gotten rid of, and afterwards capsicum red pigment is improved. Reflux and extract with n-hexane two times as high as that of chili powder for 1 hr at 50-55 ° C. After suction purification, the filter residue is after that refluxed and removed two times with hexane. The filtrate is distilled to eliminate the solvent and the chili oleoresin is acquired. You can likewise utilize 20kg acetone to saturate 15kg chili powder at space temperature level for 3 days. After filtering, the solvent and also 0.5 kg chili oleoresin will certainly flow out. The secret to drawing out Chili Red is to eliminate the spiciness and also refine it, and there are lots of ways to do it.
Alkali treatment-solvent extraction method
Include 500g of capsicum oleoresin with a color worth of 100,000 to 500g of 20% NaOH remedy, and likewise mix at 95 ° C for 2 hours. Afterwards consist of 2kg of water and also adjust the Ph worth to 5 with 10% hydrochloric acid; allow it represent layering, take the oil layer, as well as add 4kg of ethanol; after the oil layer is liquified, gradually include water up until the ethanol focus is 20%, as well as mix at room temperature degree for half an hour.After letting it represent one night, different the pigment by decantation; clean it twice with 250g of 2% NaOH option, then wash it with water up until neutral, and dry it under minimized pressure to get 65g of Chili Red without any spicy taste and a shade worth of 500,000.
Lipase-oil solvent-molecular purification method
Include 1kg of capsicum oleoresin with a color value of 100,000 as well as 12g of lipase (activity of 30,000 devices) to 500ml of water, mix and mix at 40 ° C for 12h, then warmth at 90 ° C for 1h to eliminate the enzyme; let it stand over night as well as separate. Oil layer, distill under minimized pressure (133.3 ~ 666.6 ) to eliminate water and low-boiling factor compounds, and also obtain 965g of oil-containing pigments; include 100g of refined olive oil to it, and also make use of a centrifugal thin-film molecular purification tool to do molecular purification at a vacuum of 0.1066 and 170 ° C., the certain scent-laden elements and fatty acids were distilled off, as well as 420g of a pigment with a shade worth of 226,000 was acquired, which was primarily unsmelling.
Transesterification-volumetric method
Include 40g of metallic sodium to 3L of methanol, then include 1.5 kg of capsicum oleoresin with a color worth of 100,000, and reflux for 3 hrs to perform a transesterification response. Then the excess methanol was distilled off, the deposit was poured into 5L warm water, and the pH value was adjusted to 4-6 with water down hydrochloric acid. After standing for splitting up, take the oil layer, add 7.5 L hexane to it, speed up the pigment, as well as filter to get 155g of non-spicy capsicum red pigment with a color value of 650,000. Chili Red can also be extracted using a brand-new splitting up technology – supercritical removal.
