Cauliflower with different color has different pigments and nutritional value .In order to provide infor-mation in proper consumption , harvest time and cauliflower breeding , changes of antioxidant activity and pigments were studied during floret development of cauliflower with white ,green,purple and yellow color .The analysis was carried at earlier ,middle and later period of floret development .The results showed that antioxidant activity did not change apparently during floret development of different cauliflower ,while the order of antioxidant activity from high to low was the purple ,green,white and yellow cauliflower .There was significant difference of total phenol content of florets,and the order from high to low was the purple ,green,yellow and white cauliflower .There was significant difference of pigments among four kinds of cauliflower .Green cauliflower ( broccoli ) had the highest content of chlo-rophyll and carotenoid which kept increasing during the growth .The purple
Using fresh cauliflower is experiment material, effect of the concentrations of O2 and CO2 gases on cauliflower are studied. Optimal storage conditions are determined by the determination of weight loss, vitamin C, titrable acid, respiration intensity, and PPO enzyme activities. The result shows that cauliflowers can be stored for 17 d at 4 ℃ when O2 is 5% mixed with 3%of CO2, and the tolerance concentration of CO2 for the cauliflower is 6%.
HPLC determination method for the determination of Phoxim in Cauliflower was established. The result showed that the maximum standard deviation of cholesterol content is 0.79%under this this method for determination and cholesterol content displayed an excellent linear relationship , the standard curve equation was y=46.768 2x-0.716 7(R=0.999 8). The spike recoveries for cholesterol were between 98.12%and 102.28%. The results show that the ultrasonic processing group felt much better than the group , the method was feasibility and accurate for using to determine phoxim content in Cauliflower , the average contents of phoxim content in Cauliflower is 25.62μg/kg by HPLC determination. The result is accord with national level (phoxim in vegetable content≤0.05 mg/kg) .
Starting from introducing the two crops arrange of rice-vegetable rotation system, the main cultivation techniques of this mode were elaborated in detail from the following aspects, including species selection, cultivation techniques of cauliflower and cultivation techniques of rice.
Taking advantage of the favorable conditions of fertile soil, sufficient sunlight, convenient irrigation in Chuandao area of Weihe River Basin in Gansu province, the high efficient cultivation pattern of interplanting the field of leek with cabbage or cauliflower can improve the multiple crop index and increase economic efficiency with net income of 13 000 yuan per 667 m2. The pattern has very good application prospect.
Objetive To investigate a method of collecting lung cancer cells with bronchofibroscopic biopsy for primary culture and to improve the success rate of primary culture. Methods Thirty lung cancer specimens were obtained through bronchoscopic biopsy for primary culture. The correlation of cancer morphology under bronchofi-broscopy and success rate of primary culture was analyzed. Results Among the lung cancer specimens obtained through bronchoscopic biopsy, primary culture was successful in 17 of 30 cases (56.67%) . The success rate of cauliflower-like tumor mass under bronchofibroscopy was 84.62% (11/13) . The success rate of infiltrating tumor mass under bronchial mucosa with luminal stenosis with or without cristate were 66.67% (2/3) and 37.5%(3/8), respectively. The primary culture of a globular and stiff tumor mass was successful only 1 in 6 cases (16.67%) .Conclusions The primary culture of lung cancer cells obtained from bronchofibroscopic biopsy is simple and effective with a tot
Using fresh cauliflower as experiment material ,the postharvest physiological changes of cauliflower were studied by the determination of weight loss,respiration intensity,vitamin C,browning degree,sugar content and peroxidase activities.The results showed that the weight loss and browning degree of cauliflowers were on the increase during storage ,the respiratory intensity and the content of vitamin C of cauliflowers were on the decrease during storage ,reducing sugar content in cauliflowers were on the decrease after the increase ,peroxidase activities of cauliflowers were on the increase after the decrease.
Diamond films deposition were implemented through microwave plasma chemical vapor deposition (MPCVD)method using mixed gas of CH 4/H 2/N2 .Influence of N2 on diamond films was studied in detail.Scanning electron microscope (SEM),laser Raman spectroscopy and X-ray diffraction (XRD)were used to observe the surface morphology,the phase composition and the crystal orientation of diamond films.Results showed that the content of amorphous diamond phase in the film increased with the enlargement of N2 volume concentration (from 0% to 6%),but the diamond grain size presented a downward trend.Meanwhile, the crystal orientation of larger (1 1 1 ) crystal plane transforms into smaller (100 )crystal plane.It is more conducive to obtain diamond films with high (100)crystal plane under a relatively low N2 concentration(about 2%),while it turns up a kind of"cauliflower" structure when N2 concentration was 4%.
