[MHGinTN]

Calculate how much hydrogen is in the bananas, allow for loss of hydrogen during the ‘destruction of the banana as it reverts to basic unit construction, then look at how little hydrogen would be left to ‘light up like a star’. I seriously doubt that the mass of bananas named would yield sufficient unit hydrogen to light up star fusion.

[sig226]

Now you are making me reconsider. Fusion energy can't disrupt the gravity of the sun, so any reaction concerning bananas shouldn't be able to break up the banana sun, either. The energy at the core is essentially stuck there. It should be so hot that the elements can't react with each other - no product would be stable in that environment.

Bananas are mostly starch (C₆H₁₀O₅) and sucrose (C₁₂H₂₂O₁₁). The fats contain glycerol (C₃H₅OH₃), and the other components contain potassium nitrogen, iron, zinc, chlorine, and trace quantities of a few other elements.

The core tempreature is sufficent to generate nucleosynthesis. This leads to the Carbon Nitrogen Oxygen chain, which increases fusion of helium and raises the temperature. If it gets hot enough, the model has to account for carbon fusion. I suspect that Dr Hawking, et al., have never contemplated this eventuality.