
What is Fermentation-derived Protein Isolate? (JirehPro )
It is a protein isolate derived from yeast Saccharomyces cerevisiae (more commonly known as bakers/brewers yeast) using fermentation. It is a complete protein, as it contains all 9 essential amino acids and has a similar amino acid profile to whey protein concentrate. Fermentation-derived Protein Isolate is also naturally free of allergens including, gluten and soy and is GMO free. Since it contains no dairy, there is no lactose and therefore no gastric distress or bloating. JirehPro is heat-stable, so it can be added to both hot or cold foods and it can be added to sweet and savoury dishes. JirehPro leaves no carbon footprint. A vegan protein for non-vegans (too)
Ummmm….I’m concerned about the “yeast” part…Does Yeast-derived Protein Isolate contain any yeast in the final protein product?
No. Yeast-derived Protein Isolate does not contain whole or viable yeast cells in the final product; it is an isolated protein which means the processing includes an extraction and purification stage which removes or partially removes the non-protein components like fats and polysaccharides, leaving a protein isolate.
This process makes Yeast-derived Protein Isolate a vegan, allergen-free and gut-friendly protein.
How does JirehPro (Fermentation-derived Protein Isolate) compare to whey protein?
Fermentation-derived Protein Isolate is a complete protein with all 9 essential amino acids. It has a similar amino acid profile to whey protein concentrate, both have a PDCAAS of 1.0. The source of our JirehPro contains higher BCAAs than most whey proteins. It is allergen-free, gluten-free and of course, dairy-free. In addition, there are no antibiotics and hormone residues. It is GMO free and pesticide-free. Plus it leaves no carbon footprint, is eco-friendly and is sustainable for the planet.
What does PDCAAS of 1.0/1.0 mean?
PDCAAS stands for Protein Digestibility-Corrected Amino Acid Score. This measures the quality of the protein based on the amino acid requirements of humans, as well as how easily these amino acids are digested in humans.
1.0 is the highest score, which indicates that the protein meets human amino acid needs and is highly digestible. JirehPro scores 1.0, which is the same as whey protein.
How does JirehPro (Fermentation-derived Protein Isolate) compare to plant proteins?
Fermentation-derived Protein Isolate is a complete protein with all 9 essential amino acids. Many plant proteins are categorised as incomplete proteins because they may lack one or more essential amino acids. These plant proteins include; rice, corn, wheat, barley, peas, nuts.
Some plant proteins (soy, chickpeas and alfalfa sprouts) can contain phytohormones, which are hormones derived from plants, which can influence various physiological processes in humans when consumed:
Soy Protein – Contains isoflavones (phytoestrogens), which can mimic estrogen in the body.
Chickpeas – May contain plant compounds that have been linked to hormone regulation.
Alfalfa Sprouts – contains phytoestrogens.
In addition, pesticide residues may be found in plant proteins, many are GMO and may contain allergens.
Is Fermentation-derived Protein Isolate safe to use everyday?
Absolutely! The finished product of the protein isolate contains no viable yeast. The yeast, which is used in the fermentation process is Saccharomyces cerevisiae…more commonly known as bakers/brewers yeast and this has been used for centuries to make foods and drinks such as sourdough, wine, beer and kombucha.
It can be used daily to boost the protein content of any meal… or you can take it after you have exercised for muscle repair and recovery.
Because it has a slower absorption rate, there is less load on the kidneys and liver plus you get the benefit of a sustained supply of amino acids to your body over the day. Because of this, you’ll feel more satisfied for longer, which is great if you’re wanting to cut a bit of extra bodyfat.
As with any new supplement.. we suggest starting off with a quarter serving and increasing to the recommended full serving over a couple of weeks.
How does the amino acid profile of Fermentation-derived Protein Isolate (JirehPro) compare to whey and other animal proteins?
It is very similar to whey, when it comes to its amino acid profile, containing all nine essential amino acids. With a PDCAAS score of 1.0, it’s nutritionally complete, offering the same muscle-building benefits as animal proteins, including whey, eggs and milk.
JirehPro is easy on the body, well assimilated, free from allergens, plus there is no carbon footprint. It’s not just for vegans, it’s the ideal protein for those folk wanting to get a top quality protein, whilst making a pro-active choice in terms of sustainability for the environment.
Is JirehPro protein and its products suitable for all types of vegan and vegetarian diets?
Yes! It is fully vegan and offers a balanced and effective protein source for vegans (and non-vegans too!)
It is non-animal.
Because it is a complete protein, (containing all 9 essential amino acids) and because it has a high amino acid profile, with a PDCAAS of 1.0, and because it contains NO phytoestrogens, it should be compared to whey protein, not to plant proteins, such as soy or pea protein.
Is JirehPro non-GMO?
Yes, it is certified non-GMO.
Do I need to be exercising to use JirehPro ?
Not at all – Your body needs protein every day: Protein supports everything structural within the body, including muscle repair, bones, blood, hormones.
Many “ordinary” folk use JirehPro to boost their daily protein intake..
Athletes love JirehPro for its recovery for their hard-working muscles.
People trying to lose weight love it, as it sustains them throughout the day, helping them to feel fuller and stop the munchies!
Special needs: Who can safely use JirehPro? Elderly? How about pregnant women? Early years of childhood? People on medication? What about kidney disease?
If you have any medical issues or health concerns, or fall into any special needs category, it’s always advisable to consult your doctor or a healthcare professional before introducing anything new into your diet.
JirehPro is assimilated slowly which means that there is
In addition, with any new food, start with a small amount and increase slowly over a few days or weeks.
Tell me more about the “slow protein” part?
Fermentation-derived Protein Isolate is a slow-digesting protein and although it doesn’t immediately flood the body with a high amino acid content, there are several benefits:
- There is steady supply of amino acids to the body, assisting with muscle recovery
- The rate of protein breakdown is slower, protecting muscle breakdown.
- This protein gives a feeling of fullness for some time after consumption, which may assist with weight control.
- It may support and protect organs from metabolic overload. After eating protein, the liver and kidneys work to maintain certain amino acid concentrations. Slow-digesting proteins help prevent the kidneys from overworking by reducing the load of nitrogenous waste.
What does JirehPro offer athletes and general fitness folk?
- Complete Protein Profile: JirehPro contains all nine essential amino acids required for muscle repair, growth and recovery.
- Sustained amino acid feed: Because of its slower absorption, there is steady supply of amino acids to the body, assisting with recovery.
- Rich in branched-chain amino acids (BCAAs): JirehPro is packed with BCAAs which support muscle growth and repair as well as minimising damage to muscles during exercise.
- PDCAAS Score of 1.0: JirehPro has a perfectly balanced amino acid profile, matching whey protein in quality but without dairy.
When is the best time to take this protein?
If you are exercising, then for best results, you should take JirehPro as soon as you can after your session. If you have a sedentary lifestyle, then you can take JirehPro anytime to meet your daily protein goals. Add it to hot or cold foods or drinks, sweet or savoury recipes. Protein muffins for breakfast!
As with any new supplement.. we suggest starting off with a quarter serving and increasing to the recommended full serving over a couple of days or weeks
Are there any allergens in JirehPro?
No – JirehPro is allergen-free, it’s a reliable choice for most individuals with food sensitivities or allergies. As with any new food or food supplement, it’s recommended to start with a small serving to see how your body responds.
If you have any specific health conditions or concerns, always consult your doctor or healthcare professional before incorporating anything new into your diet.
Start with a quarter serving and increase to the recommended full serving over a couple of days or weeks.
Can this protein help me lose weight?
JirehPro is considered a “slower” protein: It gives your body a sustained “feed” of amino acids throughout the day. This can help you to feel fuller for longer and can help regulate cravings. In addition, JirehPro supports lean muscle mass – which drives metabolism… Both are key for managing bodyfat.
How does yeast-derived protein isolate taste?
It has a mild, sometimes slightly savoury taste, allowing it to blend well with different flavours in both sweet and savoury recipes. Heat stable and versatile. Protein potato bake for dinner?

