How to insert a break in my y axis?

I would like to add a break in my left y-axis. Which function should I use according to my code?

%Data
x=[0,6,24,48,72];
Glu1=[1.71,1.69,1.48,0.98,0.69];
errGlu1=[0.09,0.03,0.12,0.06,0.03];
Fru1=[42.92,41.99,37.45,24.34,13.10];
errFru1= [2.01,0.83,0.91,3.20,2.99];
Et1=[0,0.13,1.40,5.16,8.97];
errEt1=[0.15,0.10,0.24,0.30,0.85];
Gly1=[0,0,0.08,0.28,0.33];
errGly1=[0.02,0.03,0.03,0.08,0.03];

figure
hold on
xlabel('Time [h]');
fontsize(12,"points");

yyaxis left
ylabel('Glucose, Fructose [g/L]');
ax= gca;
ax.YAxis(1).Color = [0 0 0];
Glucose= plot(x,Glu1,'^-','LineWidth',2);
Fructose= plot(x,Fru1,'^-','LineWidth',2);
errorbar(x,Glu1,errGlu1,'LineStyle','none','Color','black');
errorbar(x,Fru1,errFru1,'LineStyle','none','Color','black');
ylim([0 45])

%Colorder for the left side
newcolors1 = [0.83 0.14 0.14
    1.00 0.54 0.00];
colororder(newcolors1)

yyaxis right
ylabel('Ethanol, Glycerol [g/L]');
ax.YAxis(2).Color = [0 0 0];
Ethanol= plot(x,Et1,'v-', 'LineWidth',2);
Glycerol= plot(x,Gly1,'v-','LineWidth',2);
errorbar(x,Et1,errEt1,'LineStyle','none','Color','black');
errorbar(x,Gly1,errGly1,'LineStyle','none','Color','black');
ylim([0 12]);

%Colorder for the right side
newcolors2 = [0.47 0.25 0.80
    0.25 0.80 0.54];
colororder(newcolors2)

% Legend
legend([Glucose, Fructose, Ethanol, Glycerol],'Glucose','Fructose','Ethanol','Glycerol');
hold off

Answer 1

[Dyuman Joshi]

For this particular task, FEX submissions are very handful -

Breakaxis - http://www.mathworks.com/matlabcentral/fileexchange/3668-breakaxis

BreakPlot - http://www.mathworks.com/matlabcentral/fileexchange/21864-breakplot

A blog about the BreakPlot file - http://blogs.mathworks.com/pick/2008/11/21/breaking-a-plot-to-improve-visualization/#3