Functional foods and nutraceuticals are growing strongly because consumers expect products that do more than provide basic nutrition. They want products that support immunity, digestion, energy, sports performance, beauty, healthy aging, or overall wellbeing. This creates a major challenge for manufacturers: many of the ingredients that create this added value are sensitive. Probiotics must remain…
In pharmaceutical development and quality control, water is often treated as a simple number. A product contains a certain percentage of water. This value is measured by Loss on Drying or Karl Fischer titration, compared with a specification, and used as part of release or stability testing. But for many pharmaceutical products, the key question…
This calculator helps you compare the total cost of ownership of a Novasina water activity system with another water activity instrument based on a different sensor technology. The calculation includes the main cost drivers over the selected evaluation period, such as instrument investment, software costs, calibration materials, recurring service costs, and operational effort. This makes…
This practical decision calculator helps you estimate whether investing in an in-house water activity instrument is financially worthwhile compared with routine testing at an external contract laboratory. By entering a few key assumptions, such as instrument price, expected sample volume, external laboratory cost per sample, internal working time, and annual service costs, you can quickly…
A THOUSAND YEARS OF MAINTAINING SPICE QUALITY THROUGH WATER ACTIVITY CONTROL INTRODUCTION Spices have played a defining role in human history, shaping global cuisine, trade, and cultural exchange for thousands of years. From ancient caravans crossing the Silk Road to the vast maritime routes forged during the Age of Exploration, spices such as pepper, cinnamon,…
Seafood in its various forms is considered a delicacy by many around the world as well as serving as a food staple for many coastal regions. Unfortunately, fresh seafood is not shelf-stable due to its high water activity and long term storage requires either freezing or controlling the water activity through drying, smoking or salting….
Your pet food is still within its moisture specification, but a customer finds mold in the bag. A dry kibble develops an unpleasant rancid smell before the end of its intended shelf life. A semi-moist treat becomes hard during storage, while crunchy pieces in a multi-texture product become soft. Or the same dryer settings that…
A soft cookie should stay soft. A cracker should stay crisp. Bread should remain fresh without developing mold. A filled cake should keep its individual textures without moisture moving from one component to another. These products are very different — but they share one important parameter: water activity (aw). Water activity describes the energy state…
A powder can leave production within its moisture specification, flow perfectly through the filling line and still arrive at the customer as a hard, compacted mass. A spice blend can remain microbiologically unable to support growth and yet lose aroma, color or functionality. A spray-dried powder can be stable under dry warehouse conditions but become…
For manufacturers of jerky, salami, pepperoni, meat sticks, dried sausages and other shelf-stable meat products, controlling water is essential. But moisture content alone does not tell you whether a product is microbiologically stable. The more relevant parameter is water activity (aw). Water activity measures how available water is for microbial growth, chemical reactions and physical…
