#!/usr/bin/perl
use strict;
use warnings;
my $book= "^\\s\*book ref \#";
my $book_res = $book =~ "/^\\s\*owner \#/";

my $title = "^\\s\*title ";
my $title_res = $title =~ "/^\\s\*title /";
foreach (<DATA>) {

  next unless /$book|$title/ip;
   
print ;
}

# here i would like to access the regex matches as scalers
 
__DATA__

Book ref #4346
Lent: Sun Jul 12 03:26:43 BST 2015
status Lent
Description: classic
title blah blah blah
last used: 2
color red
Pages 238
Publisher Bca
Type Hardback
Location: N/a
Author R jones

##</code><code>##

resulted matches

Book ref #4346
title blah blah blah