1 Use this equation to calculate the concentration of the protein sample based on the measured absorbance. 2  Note: If the absorbance of the test sample is outside of the absorbance range for the standards, then the assay must be repeated with a more appropriate dilution, if any.
Click to see more answers to your questions. Simply put Japanese Knotweed is not poisonous, and isnât harmful to humans like other invasive species. In fact the knotweed can be used as a food source with a taste and texture likened to rhubarb.Apparently it can also be brewed into a type of beer.Now we are not suggesting you rush out and cook up a nice pie.lick to see more answers to your questions. Simply put Japanese Knotweed is not poisonous, and isnât harmful to humans like other invasive species. In fact the knotweed can be used as a food source with a taste and texture likened to rhubarb.
Below is an extensive, if incomplete, list of plants containing poisonous parts that pose a serious risk of illness, injury, or death to humans or animals. Although the oxalic acid content of rhubarb leaves can vary, a typical value is about 0.5%, so almost 5 kg of the extremely sour leaves would have to be consumed to reach the LD50. 2  Cooking the leaves with soda can make them more poisonous by producing soluble oxalates.