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Biosteril ® Natural steam sterilization

BIOSTERIL ® has been operating its germ-reduction facilities in Ritschenhausen, Germany, since 1994. By means of a vacuum-steam-vacuum process, germ counts in dried foodstuffs can be reduced by several factors of ten in a natural, gentle way. This enables also the processing of certified organically grown produce.

Our Services

  • Reduction of total germ count to completely safe levels

  • Eradication of pathogenic germs

  • Elimination of mould and yeast

  • Eradication of insects, larvae and eggs

Additional services

  • grinding

  • package

  • cleaning

  • homogenising

  • cutting

  • stock protection

BIOSTERIL ® is the market leader in this field and has accumulated extensive experience that enables it to achieve optimal results while preserving the sensory properties of the produce. Each year, the company degerms several thousand tonnes of tea, seeds, herbs, spices, dried mushrooms and dried vegetables, as well as raw ingredients for the pharmaceutical industry. Thanks to pinpoint temperature and pressure parameters, we can degerm your goods in a tailor-made fashion that meets your every need.

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Pilot unit for pre-trial measurements and development

Our pilot unit is built around a small-scale autoclave which enables us to conduct degerming tests and always determine the ideal set of parameters for treating highly delicate, price-sensitive produce. As a result, we can offer our customers the highest degree of certainty and safety. We would be pleased to conduct a trial degerming run on your behalf and draw up the optimal treatment programme for your produce.

GMP-approved for the strictest product requirements

GMP (good manufacturing practice) stands for the highest seal of quality available and guarantees the maintenance of hygiene and safety standards in the pharmaceutical industry. In order to meet increasingly demanding hygiene and safety requirements, BIOSTERIL ®, the industry's declared benchmark for quality, consistently targets the highest possible certification. As holders of a manufacturing license for plant-based medicinal products, we are an acknowledged partner of the herbal medicine industry.

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Products suitable for degerming

Thanks to a gentle, natural process involving pure steam, even sensitive and particularly valuable products can be given delicate treatment suited precisely to your needs. Our expertise, gathered over the course of almost a quarter of a century, and state-of-the-art processing facilities are your guarantee for safety and efficiency. As part of its standard service offering, BIOSTERIL ® degerms the following products:


  • Asparagus green

  • Asparagus white

  • Aubergine

  • Beetroot red

  • Beetroot yellow

  • Bell pepper green

  • Bell pepper red

  • Broccoli

  • Cabbage

  • Carrot

  • Cauliflower

  • Celery

  • Cucumber

  • Garlic

  • Garlic (toasted)

  • Jalapeno

  • Leek

  • Lovage root

  • Olive

  • Onion

  • Onion (low & ultralow bac)

  • Onion toasted

  • Pumpkin

  • Parsnip

  • Spinach

  • Sweet Potato

  • Tomato

  • Vegetable Mixes

  • Wasabi

  • Zucchini


  • Autumn Trumpet

  • Black Fungus / Mu-Err

  • Butter Mushroom

  • Champignon

  • Chantrelles

  • Mushroom Mixes

  • Morels

  • Oyster Mushroom

  • Porcini / Boletus edulis

  • Shiitake

  • Truffles


  • Allspice

  • Aniseed

  • Pepper (black/green/white)

  • Caraway

  • Cardamom

  • Cardamom seeds

  • Chili

  • Cinnamon

  • Cloves

  • Coriander

  • Fennel seeds

  • Ginger

  • Grains of paradise

  • Mace

  • Nutmeg

  • Peppercorns (pink)

  • Spice mixes

  • Szechuan pepper

  • Rainforest pepper

Kitchen herbs

  • Basil

  • Dill

  • Marjoram

  • Oregano

  • Parsley

  • Savory

  • Thyme

Medicinal herbs

  • Ashwagandha

  • Dandelion leaves

  • Nettle leaves

  • Raspberry leaves

  • Senna leaves


  • Rooibos

  • Tea blends


  • Barley

  • Fenugreek

  • Hemp

  • Mustard seeds

  • Poppy

  • Pumpkin

  • Sesame

  • Sunflower


  • Almonds

  • Brazil nuts

  • Cola nuts

  • Pistachios

  • Pine kernels

  • Walnuts


  • Dandelion root

  • Ginseng

  • Hawthorn root

  • Licorice root

  • Marshmallow root

  • Purple coneflower


  • Chamomile

  • Cinnamon flower

  • Cornflower

  • Marigold

  • Mullein

  • Orange blossom

  • Rose blossom


  • Flower pollen

  • Goji berries

  • Guarana

  • Nettle leaves

  • Orange segments

  • Raisins

  • Vanilla pods

A validated procedure

Kündig Group: Natürliche Keinmreduktion
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CO2 pressure disinfestation

CO2 pressure disinfestation is a rapid, natural and contaminant-free treatment method that is also approved for use on organically cultivated produce. The storage protection process can be conducted shortly before shipment of the goods.

PH3 storage treatment

PH3 treatment for the storage of dried foodstuffs is an approved process under emission protection laws. It affords a cost-effective means of protecting conventional foodstuffs from infestation.

Free advice and trial degerming offer

Contact our team of specialists here for complimentary advice plus a trial degerming offer geared perfectly to your product with a before-and-after analysis by an accredited laboratory. We need your name to contact you and your email address to reply. Your request is encrypted and sent to our server via https. You can find further information on data protection and revocation notices in our data data protection declaration.

Contact details

Tel.:+49 36949 2840


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