Low-temperature cold-squeezing method of green camellia oil without damaging nutrient substances

Abstract

The invention discloses a low-temperature cold-squeezing method of green camellia oil without damaging nutrient substances. The low-temperature cold-squeezing method comprises the following steps: after husking, screening and cleaning camellia seeds, storing at low temperature and crushing at low temperature, performing vacuum freezing, drying and dehydrating on crushed camellia seed powder, performing low-temperature cold-squeezing and low-temperature crystal growing by using a low-temperature cold pressing machine, and filtering to obtain finished product camellia oil. According to the low-temperature cold-squeezing method, a low-temperature cold-squeezing technology is adopted in the whole process, low temperature is continuously kept in a process of squeezing the camellia oil, so that the production of harmful substances can be avoided as far as possible in the squeezing process, the quality of the camellia oil after squeezing is high, natural taste and smell of the camellia oil can be kept, so that the physical extract camellia oil technology plays to extreme without using an organic solvent to purify and without the problem of solvent residual, and is suitable for preparing high-grade ecological green camellia oil.

Description

Technical field [0001] The invention relates to the technical field of deep processing of camellia oil, in particular to a method for low-temperature cold pressing of green camellia oil without damaging nutrients. Background technique [0002] Camellia oil is a high-quality edible oil squeezed from camellia seeds. When squeezing camellia oil from camellia seeds, the traditional method is generally to use a dryer to heat and dry the crushed camellia seed powder before pressing the oil. In this method, since the camellia seed powder is heated by high temperature, the nutrients rich in the camellia seed are easily destroyed to produce some undesirable substances, such as benzo a pyrene, resulting in a relatively high impurity content in the extracted camellia oil, which affects the quality. [0003] At present, although some manufacturers have introduced low-temperature cold pressing equipment for camellia oil to perform relatively simple low-temperature cold pressing of camellia seed...

AI Technical Summary

Problems solved by technology

[0002] Camellia oil is a high-quality edible oil extracted from camellia seeds. When extracting camellia oil from camellia seeds, the traditional method is to use a dryer to heat and dry the crushed camellia seed powder before pressing the oil. In this method, because the camellia seed powder is heated at high temperature, the rich nutrients in the camellia seed are easily destroyed to generate some undesirable substances, such as benzo-a-pyrene, resulting in a relatively high content of impurities in the extracted camellia oil, which affects the quality

[0003] At present, although some manufacturers have introduced low-temperature cold-pressing equipment for camellia oil to perform relatively simple low-temperature cold-pressing on camellia seeds, due to the limitations of existing process equipment, when using existing screw presses for oil extraction, camellia The seed powder still needs to be heated and dried, and the temperature inside the press chamber of the oil press will continue to rise during the oil extraction process. It is difficult to control the temperature in the oil extraction process at a lower temperature, and the quality of the extracted camellia oil will also be affected. To maintain the natural taste and natural smell of camellia oil, the biologically active substances in the oil cannot be retained to the maximum extent, and the generation of undesirable and harmful substances can not be reduced, so it is difficult to improve the quality of the processed camellia oil to the extreme level, and it is difficult to meet the quality requirements for camellia oil high user requirements