Write two methods of preparation of Glucose?

i) Glucose can be obtained by hydrolysis of sucrose (cane sugar) in presence of acid
$\underset{\mathrm{Sucrose}}{{\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}+{\mathrm{H}}_2\mathrm{O}}\stackrel{{\mathrm{H}}^{⊛}}{\to } \underset{\mathrm{Glucose}}{{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6}+\underset{\mathrm{Fructose}}{{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6}$
ii) Glucose can be prepared in large scale by hydrolysis of starch with dil H₂SO₄ at 393 K temperature and 2-3 atm pressure
${\left({\mathrm{C}}_6{\mathrm{H}}_{10}{\mathrm{O}}_5\right)}_{\mathrm{n}}+{\mathrm{nH}}_2\mathrm{O} \underset{393\mathrm{K};2 3\mathrm{atm}}{\overset{{\mathrm{H}}^{+}}{\to }} {\mathrm{nC}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$