This is not the case; HSA and the other fluids tested as inductors were added to the growth medium (LB) medium, and the cells were allowed to grow in these conditions for 5 h at 37ºC. After that, the cells were collected, and RNA was extracted. Since HSA does not reach the cytosol, at least not in an intact manner, hydrolysis seems not possible during cell growth.
It is known that HSA can bind RNA and DNA and has RNA hydrolyzing activity. In this way your experiment in par 2.2. may lead to not all RNA after incubation with such amount of albumin. That is why some of your effects may have other explanations.