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Method for removing organic solvent in tomato oleoresin
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A technology of organic solvents and tomato oil, applied in organic dyes, organic chemistry, chemical instruments and methods, etc., can solve the problems of high residual organic solvents, high cost, low extraction rate, etc., and achieve improved purity, low cost, and avoidance of efficiency low effect
Inactive Publication Date: 2016-04-13
重庆市涪陵区棋元粉丝厂
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Problems solved by technology
The solvent extraction method is the most common, and it is reported in documents such as PCT patent application W097 / 48287, W096 / 13178 and Chinese patent application CN1176577A, but the biggest problem of this method is that the residual organic solvent is high, and it is difficult to use general methods such as vacuum distillation Failure to remove organic solvent residues to acceptable levels
The technology of applying supercritical fluid to extract lycopene has been studied more in recent years, such as the technology disclosed in Chinese patent application CN1334328A, but because the content of lycopene in tomato is very low, generally only 180mg / 1000gFW, and The extraction rate of supercritical extraction of lycopene is lower than that of the solvent method, and the one-time investment of equipment is high, so the cost is very high, and it is not suitable for direct use in industrial production
[0003] At present, there are many studies and applications on the application of supercritical fluid technology to extract essence, volatile oil and active ingredients in plants, but the research and reports on the application of supercritical fluid technology to remove organic solvents in finished and semi-finished products (food and medicine) are rare. , because the parameters need to be explored through a large number of experiments
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Embodiment 1
[0011] Embodiment 1, remove the organic solvent in tomato oleoresin with supercritical method
[0012] Add 70.0 g of tomato oleoresin with 76.71 mg / g ethanol residue and 2.23 mg / g ethyl acetate residue into the extraction kettle of the supercritical extractor, the extraction pressure is 3000 psi, the extraction temperature is 45 °C, and the carbon dioxide flow rate is 2.5 liters / g Minutes, extraction time 4 hours.
[0013] The final solvent residues of the obtained tomato oleoresin were determined: ethanol was 10.30 mg / g, ethyl acetate was 0.19 mg / g, which were respectively reduced by 86.6% and 91.5% compared with those before extraction.
Embodiment 2
[0014] Embodiment 2, remove the organic solvent in tomato oleoresin with supercritical method
[0015] Add 70.0 grams of tomato oleoresin with 76.71 mg / g ethanol residue and 2.23 mg / g ethyl acetate residue into the extraction kettle of the supercritical extractor, the extraction pressure is 3000 psi, the extraction temperature is 40 °C, and the carbon dioxide flow rate is 1.0 liters / g Minutes, extraction time 3 hours.
[0016] The final solvent residues of the obtained tomato oleoresin were measured: ethanol was 15.49 mg / g, ethyl acetate was 0.25 mg / g, which were respectively reduced by 79.8% and 88.8% compared with those before extraction.
Embodiment 3
[0017] Embodiment 3, remove organic solvent in tomato oleoresin with supercritical method
[0018] Add 70.0 g of tomato oleoresin with 76.71 mg / g of ethanol residue and 2.23 mg / g of ethyl acetate residue into the extraction kettle of the supercritical extractor, the extraction pressure is 3000 psi, the extraction temperature is 35 °C, and the carbon dioxide flow rate is 0.5 liter / g Minutes, extraction time 2 hours.
[0019] The final solvent residues of the obtained tomato oleoresin were measured: ethanol was 25.43 mg / g, ethyl acetate was 0.36 mg / g, which were respectively reduced by 66.8% and 83.9% than before extraction.
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Abstract
The invention discloses a method for removing an organic solvent in tomato oleoresin. The method is characterized in that the organic solvent in a raw material tomato oleoresin can be removed by employing a supercritical extraction method. During the supercritical extraction process, a pressure is 1000-4500 psi, temperature is 35-65 DEG C, flow is 0.5 liter / min-2 liter / min, and extraction time is 1-4 hours. The method overcomes insufficiency of high residue of the organic solvent in the tomato oleoresin extracted by the organic solvent, and avoids the insufficiency of low extraction efficiency of the tomato oleoresin extracted only by supercritical fluid, compared with single usage of the supercritical extraction method, cost is low, and the method is suitable for industrial batch production.
Description
technical field [0001] The invention relates to a method for removing organic solvents in products, in particular to a method for removing organic solvents in tomato oleoresin. Background technique [0002] Lycopene is an important industrial raw material. At present, the extraction methods of lycopene are mainly solvent extraction and supercritical extraction. The solvent extraction method is the most common, and it is reported in documents such as PCT patent application W097 / 48287, W096 / 13178 and Chinese patent application CN1176577A, but the biggest problem of this method is that the residual organic solvent is high, and it is difficult to use general methods such as vacuum distillation Unable to remove organic solvent residues to a satisfactory level. The technology of applying supercritical fluid to extract lycopene has been studied more in recent years, such as the technology disclosed in Chinese patent application CN1334328A, but because the content of lycopene in t...
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