Photobioreactor for cultivating haematococcus pluvialis

Abstract

The invention discloses a photobioreactor for cultivating haematococcus pluvialis. The photobioreactor comprises an upright stand, a base, culture tubes, a top cover, a spherical rotor, a rubber plug and a motor, wherein two layers of culture tubes are arranged into an umbrella shape; the tubes at the upper layer are used for transformation culture of haematococcus pluvialis and directly exposed to light, so that the culture solution is quickly heated under strong light irradiation and advantageous for efficient transformation; the tubes of the lower layer are used for nutrient culture haematococcus pluvialis, and under condition that light is shielded by the tubes at the upper layer, temperature rise in the tubes is not obvious, which is advantageous for nutritional growth of the haematococcus pluvialis; the umbrella shape design, in combination with the environmental conditions required by nutritional growth and transformation, is capable of realizing efficient culture; a rotating shaft is arranged at the middle part of the upright stand and connected with the spherical rotor in the base, the spherical rotor is connected with the motor, and the motor runs to drive the umbrella-shaped photobioreactor to rotate; as a result, the surface of the culture solution is in sufficient contact with air, which is advantageous for photosynthesis, and furthermore, the destruction of the haematococcus pluvialis caused by shear force generated by air inflation is avoided.

Description

technical field [0001] The invention relates to cultivation equipment for Haematococcus pluvialis, in particular to a photobioreactor for cultivating Haematococcus pluvialls. Background technique [0002] Haematococcus pluvialis is a single-cell green alga that produces natural astaxanthin. It has a high content of astaxanthin and is regarded as a "concentrate" of natural astaxanthin. Astaxanthin is the substance with the strongest antioxidant capacity in nature, 20 times that of vitamin C, and has the functions of relieving fatigue, delaying aging, preventing and treating cardiovascular and cerebrovascular diseases; it is also widely used in salmon feed, and the cultured salmon It has good taste and nutritional value. Due to the stability and safety of the natural astaxanthin structure, at present, cultivating Haematococcus pluvialis is a new biotechnology industry to obtain astaxanthin, which is vigorously promoted by various countries. [0003] There are two main method...

AI Technical Summary

Problems solved by technology

[0003] There are two main methods for large-scale cultivation of Haematococcus pluvialis: one is the closed-type cultivation of photobioreactors, which use transparent pipes laid on the ground with a certain inclination or upright as the sealed piping system for cultivation, and flow Haematococcus pluvialis is cultivated under the conditions of controlling temperature, light intensity, medium and other conditions; this kind of culture method makes each stage of culture reasonably reach the best culture conditions, and can realize high-density culture and product The rapid accumulation can also avoid the harm of external harmful organisms, reduce production costs, and realize semi-continuous or even continuous cultivation; however, the investment is large, and how to add nutrients in time and eliminate excessive oxygen is also a technical problem.

The second is an open culture system, including a culture tank, a collection pipeline and a stirring device; the scale of this culture method is easy to enlarge, and the economic benefit is high, and it is currently used as the main culture method of Haematococcus pluvialis; however, the cultivation process of this culture method It is easily affected by the external environment, it is difficult to maintain the optimum temperature and light, and the highest growth rate and cell density cannot be guaranteed. The harvesting process and equipment also need continuous improvement

However, there are currently no land-based photobioreactors specifically targeting Haematococcus pluvialis to produce astaxanthin.

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