A kind of calcium tablet containing ergosterol and preparation method thereof
A technology of ergosterol and calcium tablets, applied in the direction of microorganism-based methods, biochemical equipment and methods, and functions of food ingredients, can solve problems such as poor taste, high price, calcium supplementation effect and product absorption rate to be verified, etc. Achieve the effects of improving permeability, promoting calcium absorption, and improving human immunity
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Embodiment 1
[0042] The content of ergosterol in the original strain
[0043] (1) Strain purchase
[0044] Saccharomyces cerevisiae 08-h strain was purchased from Guangdong Microbial Culture Collection Center, number GIM 2.182. ,
[0045] (2) Bacteria culture
[0046] Preserved strains at 4°C in slant medium (composition: 1.5% (w / v) yeast extract, 0.5% (w / v) peptone, 1% (w / v) glucose, 2% (w / v) After activation on the agar), inoculate in 8mL liquid seed culture medium (being YPD medium, composition is: 1% (w / v) yeast extract, 2% (w / v) peptone, 2% (w / v) ) glucose) in a test tube, cultured at 120rpm at 28°C for 12h to obtain a first-grade liquid strain. Take 1 mL of the first-grade liquid strain and inoculate it into a 250-mL Erlenmeyer flask containing 50 mL of seed medium, and incubate at 28°C for 20 h at a constant temperature of 150 rpm to obtain the second-grade liquid strain.
[0047] (3) Fermentation broth treatment and ergosterol extraction
[0048] Centrifuge and wash 20mL of b...
Embodiment 2
[0071] Example 2 High pulse electrophoresis (HPEF) treats the yeast to increase the release of ergosterol in the fermentation broth.
[0072] (1) Yeast pretreatment: wash and centrifuge at 2~4℃ (3000r / min, 15min), 0.5% mass volume ratio NaHCO 3 Wash three times, centrifuge (3000r / min, 15min), collect the supernatant, dilute the precipitate 10 times with physiological saline, and set aside.
[0073] (2) Select HPEF parameters: under the pulse width of 13 μs, cycle treatment under the electric field strength of 10, 20, 30, 40 kV / cm respectively, and record the treatment time or the number of cycles. According to the liquid flow rate, pulse frequency, and number of processing cycles in the system, calculate the number of pulses processed by the processing medium, sample at 0, 15, 30, 45, and 60 pulses, and measure the dissolution of protein, amino acids, and ergosterol at the end of the processing , and the yeast suspension not treated with electric field was used as control.
...
Embodiment 3
[0075] Example 3 Preparation of Ergosterol Calcium Tablets
[0076] (1) Cultivate yeast under optimized fermentation conditions (using the optimized medium and culture conditions of Example 1 step (9)), the yeast cells are centrifuged, and the supernatant is collected. °C) to obtain solid material I. The cells were collected and washed twice with sterile water.
[0077] (2) Mix physiological saline and bacteria at a volume ratio of 9:1, and suspend the bacteria. Under the optimal conditions (i.e. 13μs pulse width, 40kV / cm electric field strength, 15 pulse electric fields), the yeast cells were treated with pulse electric field, and after the end, the yeast was centrifuged (3000r / min, 15min), the supernatant was collected, and frozen The supernatant was dried in a drier (0.2 mbar, -50°C) and the solid material II was collected. Solid material I and solid material II were combined to give solid material A.
[0078] (3) Ingredients: Weigh ala milk calcium, milk powder, maltod...
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