Radix Plant Protein Powder 1kg | Pea & Rice, DIAAS 1.30 | AU Stock

DIAAS stands for Digestible Indispensable Amino Acid Score. It measures how much of a protein's essential amino acids are genuinely absorbed in the small intestine, and how closely that profile matches what the human body needs. Under the FAO framework, anything at 1.0 or above is classified as a high-quality protein. At 1.30, this sits well above that threshold.

Because grams of protein and grams of usable protein are not the same thing. Two powders can both claim 25 g per serve while delivering very different amounts of absorbed essential amino acids, depending on the source and its limiting amino acid. DIAAS is the measure that accounts for that difference, which is why it has become the standard the current nutrition literature relies on.

It is competitive with whey on protein quality, and it is dairy free. Published DIAAS figures for whey protein isolate are commonly cited around 1.09, though values vary by source and testing method. The practical differences are elsewhere: whey digests faster, while plant protein sits somewhere between whey and casein, and this product suits anyone avoiding dairy or who tolerates it poorly.

Yes. It provides all nine essential amino acids in a complete profile, delivering 10.2 g of essential amino acids and 4.8 g of BCAAs per serve. Most single-source plant proteins fall short on a limiting amino acid — pea is low in methionine, rice is low in lysine — which is why complementary plant proteins are used together rather than alone.

Plant Protein DIAAS Complex 1.30 (Pea Protein Isolate, Rice Protein Isolate (92%), Natual flavours, sweetener (monk fruit extract), thickener (guar gum), pink salt

Each serve delivers 25 g of protein, 10.2 g of essential amino acids and 4.8 g of BCAAs. A 1 kg bag contains 29 serves at 34g per serve. For most adults that is a substantial contribution to daily protein intake, though total intake across the whole day matters more than any single serve.

It has an unusually mild flavour for a plant protein, which is the thing customers mention most. Vanilla is the most versatile and the one reviewers name most often — it disappears into oats and smoothies without dominating. Chocolate is the richest. Banana, Strawberry and Mango work best blended with fruit rather than shaken with water alone.

It mixes easily in a standard shaker without a blender. Plant proteins have a reputation for chalkiness and this one is noticeably smoother than most — customers report it blending cleanly into smoothies, oats and overnight oats. Shake for 15 to 20 seconds. For the fruit flavours, blending with frozen fruit gives the best texture.

Yes, which is the main reason we stock it. It dissolves in cold water in a shaker or a drink bottle, so you do not need a blender, hot water or fuel to use it in the backcountry. That makes it genuinely practical for multi-day hikes, where most protein sources are either too heavy or need cooking.

Pre-portion single serves into small zip-lock bags rather than carrying the 1 kg bag. Each serve is around 34g, so a five-day trip adds roughly 170g to your food bag. Several of our customers add a serve straight into their Radix breakfast before sealing the bag, which saves a separate mixing step at camp.

Yes to all three. It is entirely plant-based, contains no dairy, and is gluten free. Soy free and nut free. For the full allergen statement, see the ingredients listed in the specifications section on this page.

There is no added sugar — the only sugars present occur naturally in the ingredients. The sweetener used is Monk Fruit Extract, a natural sweetener

HASTA™ batch testing

It is a high-protein food with no added sugar, and protein contributes to feeling full, which some people find helpful within a calorie-controlled diet. It is not a weight-loss product and we make no weight-loss claims for it. If you are managing your weight for health reasons, an Accredited Practising Dietitian is a better guide than any product page.

Whenever it helps you hit your daily protein target — total daily intake matters more than timing. Common uses are after training, with breakfast, or as a way to lift the protein content of a meal that is otherwise light on it. On multi-day hikes, most people take it at the end of the day alongside their evening meal.

That works out to $2.03AUD per serve. Cheaper plant proteins exist, but comparing sticker prices between powders with different protein quality and serve sizes is misleading — cost per gram of usable protein is the honest comparison. You can also buy any six Radix products and save 15%.

Yes. We hold stock and dispatch from our store in Helensburgh, NSW. We are a family-owned Australian retailer and an authorised Radix stockist.

Store the bag sealed in a cool, dry place.

Yes. It works well stirred into oats, overnight oats and porridge, and it can be baked into protein bars, pancakes and muffins. Bear in mind that heat changes the texture of any protein powder, so baked results will differ from a shake. Start by replacing a small proportion of the flour rather than a large one.