Add custom category to excerpt

Hello,
I’ve add a custom category at the begin of content of posts.
And to do this I’ve added a function in loop-single.php.
Row 52

<!–<?php echo $td_mod_single->get_content();?>–>

<!– MODIFICA LOCALITÁ–>

<?php
$citta = “<div style=’float:left; padding-right: 5px; text-transform:uppercase;’ id=citta;>” . get_the_term_list( $post->ID, ‘localita’, ”, ‘, ‘, ‘.’ ) . “</div>”;
$contenuto = “<div id=contenuto;>” . $td_mod_single->get_content() . “</div>”;
echo $citta . $contenuto;
?>

Now, I would like add the custom category in excerpts in homepage. What can I do?

My site is http://www.infermierinews.it

Thank you so much.

Best regards,

Sara