A method for determining the total alkaloid content of cloverleaf alkaloids in cloverleaf plants
A technology of harringtonine and harringtonine, which is applied in the field of alkaloid total alkali content testing, can solve the problems of lack of a method for measuring the total alkaloids of harringtonine alkaloids and the like, and achieves the advantages of shortened reaction time, high detection sensitivity and rapid experimentation. Effect
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Embodiment 1
[0040] The inventive method precision, stability, accuracy and recovery rate situation
[0041] (1) Stability test
[0042] (1) Take the leaves and twigs of Torreya hainanensis respectively, dry them at 105°C for 30 minutes, and then dry them at 80°C for 12 hours. After pulverizing the samples, filter them with a 40-mesh sieve to obtain dry powder.
[0043] (2) Weigh 3g of leaf and twig dry powder respectively, add 2mL of ammonia water (28%), add 30mL of chloroform, stir well with a vibrating agitator, soak overnight, centrifuge for 15min (3000r / min), take 10mL of chloroform layer solution, ventilate Chloroform was evaporated to dryness in the cupboard, the residue was dissolved in methanol, transferred to a 1mL volumetric flask to constant volume, and repeated three times.
[0044](3) Take 50 μL of leaf and twig sample solution of Torreya hainanensis and 100 μL of harringtonine standard solution (2 mg / mL, prepared with methanol, purchased from Shanghai Yuanye Biotechnology C...
Embodiment 2
[0064] Determination of the total alkaloid content of Herringbone alkaloids in leaves and shoots of Torreya hainanensis
[0065] (1) Take the leaves and twigs of Torreya hainanensis respectively, kill them in an oven at 105°C, then dry them at 80°C for 16 hours, grind them into fine powder, pass through a 40-mesh sieve, and obtain the crude drug;
[0066] (2) Weigh 3g of leaf and twig dry powder, add 2mL of ammonia water (28%), add 30mL of chloroform, stir evenly with a vibrating agitator, soak overnight, centrifuge for 15min (3000r / min), take 10mL of chloroform layer solution, and place in a fume hood Chloroform was evaporated to dryness, the residue was dissolved in methanol, quantitatively transferred to a 1mL small volumetric flask for later use, and repeated 3 times.
[0067] (3) Take 50 μL of leaf and twig sample solution, add freshly prepared chromotropic acid solution 300 μL (0.1g / ml, filter), add concentrated phosphoric acid 3mL, hydrogen peroxide 70 μL (0.025mol / L), ...
Embodiment 3
[0073] Determination of the total alkaloid content of Herringbone alkaloids in suspension culture cells of Torreya hainanensis
[0074] (1) Take 10 mL of suspension cultured cells and put them into a 50 mL centrifuge tube, centrifuge for 15 min (2000 rpm), remove the supernatant, and weigh 4 g of cells;
[0075] Among them, the reference for the cell culture process of Torreya hainanensis: Chen Lin, Yongcheng Li. Establishment of cell suspension culture system of Torreya hainanensis. Guangdong Agricultural Science, 2014, 24:52-57.
[0076] (2) Add 1 mL of ammonia water, add 15 mL of chloroform, shake and stir for 1 min, sonicate for 30 min (80 Hz, 30 min), soak overnight, filter, take 6 mL of filtrate, evaporate chloroform to dryness in a fume hood, dissolve the residue with methanol, and dilute to 1 mL Volumetric flask;
[0077] (3) Take 100 μL of the sample solution after constant volume, put it into a 50 mL beaker, evaporate methanol to dryness, add 300 μL of freshly prepa...
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