From the leaf of lotus (Nelumbo nucifera), total alcaloids were extracted and purified in using chloroform in alcaline medium and 3% phosphoric acid solution.In mixing with bromothymol blue in buffer solution at pH=7, the complex was measured at λ =615± 1nm on spectrophotometer. For UV spectrophotometry, total alcaloids in solution were measured at λ=270nm
alkaloids ; Plant Leaves ; Lotus ; Spectrophotometry ; Colorimetry ;

Extract of Panacrine is material of preparing Panacrin drug that inhibited tumor in cancer treatment. Study on standardization of extract of Panacrine was carried out in order to stabilize Panacrin production process. Qualitative criteria were humidity <10%, total ash <9%, total content of extract in ethanol 50% should be more than 80%, and extract should have positive reaction with saponin of Panax notoginseng Burk., alcaloid of Carica papaya L. and Crinum latifolium L
Danazol ; Therapeutics ; neoplasms ; Pharmaceutical Preparations ;

The COVID-19 pandemic outbreak and subsequent lockdowns impacted the mental health of numerous sociodemographic groups globally. This crisis can produce stress, overwhelm, and powerful emotions in susceptible people, especially older persons. Our study examined the relationship between well-being and fear of COVID-19 among older persons residing in Ho Chi Minh City, Vietnam, during the pandemic. A sociodemographic survey was undertaken. Two scales are used for a month of the COVID-19 outbreak: the Mental Health Continuum Short Form (MHC-SF) and the Fear of COVID-19 Scale (FCV-19S). We surveyed 158 senior citizens in Ho Chi Minh City between February and April 2021. There was no lockdown in Ho Chi Minh before the fourth wave of infection. Despite this, citizens have maintained high compliance with coronavirus prophylaxis. Sociodemographic data were described using descriptive statistics. A one-way MANOVA assessed the financial impact on older individuals' well-being. The Pearson correlation was employed to find the link between happiness and COVID-19 dread. During the COVID-19 pandemic, older persons who received various monthly allowances had statistically significant emotional and psychological well-being differences. There was no association between well-being and COVID-19 dread. The COVID-19 epidemic has disproportionately affected vulnerable groups. Older individuals are a risk population that requires material and mental care.