Brewing Microbiology

11

Reducing microbial spoilage of beer using filtration

G.J. Freeman     Campden BRI, Nutfield, Surrey, UK

Abstract

This chapter provides an overview of beer filtration operations in commercial brewing with an emphasis on how they benefit the microbiological stability of the product. The main processes for the main beer clarification, namely crossflow and filter aid filtration, are described. Technologies that allow sterilisation of beer by filtration are also described. Techniques to optimise these processes with other technologies, process aid additions or process design are discussed.

Keywords

Enzymes; Filter aids; Filtration; Flocculents; Membranes

11.1. Introduction

Filtration of beer is a challenging operation. Prefilter beer contains a significant ...