hide e-mail addresses in dynamically generated dropdown select

when “manually” building a dropdown select with pipes as described here, the email addresses are hidden in the output:

<select>
<option value="Labeltext">Labeltext</option>
</select>

for dynamically generated options however, the adresses are not hidden:

<select>
<option value="[email protected]">Labeltext</option>
</select>

the options are generated like this:

foreach( $team_members as $team_member ) : 
  $tag['raw_values'][] = 'recipient-'.$team_member.'|'.get_field('team_member_email',$team_member);
endforeach;
$pipes = new WPCF7_Pipes($tag['raw_values']);
$tag['values'] = $pipes->collect_afters();
$tag['pipes'] = $pipes;
$tag['labels'] = $pipes->collect_befores();

is it possible to achieve “default behaviour” there, with hidden email addresses?