Baking Yeast – Composition, Vitamins, Properties, Side Effects

Saccharomyces cerevisiae is a type of yeast commonly referred to as baker's yeast, brewer's yeast, or noble yeast. The name derives from Greek, translating to "sugar fungus". These microorganisms are notable for their high enzymatic activity, which facilitates sugar breakdown. They are primarily used in baking, where fermentation produces carbon dioxide, giving baked goods a light, airy texture. Additionally, other compounds are generated, enhancing flavor and aroma. This yeast is also utilized in alcoholic beverage production, including beer, wine, and vodka, as well as in the food industry. Historical records indicate its use in ancient medicinal preparations.

Baker's yeast consists of single-celled fungi that are commonly found in nature, particularly where carbohydrates are present. They serve as a rich source of vitamins, notably those from the B group. These yeasts are particularly high in biotin, also known as vitamin H (B7). While biotin is present in various foods, its highest concentrations are found in egg yolks and nuts. This vitamin plays a crucial role in the proper functioning of certain enzymes in the body. It participates in processes such as gluconeogenesis (glucose synthesis), fatty acid formation, and the metabolism of branched-chain amino acids. Biotin deficiencies are rare, much like deficiencies in pantothenic acid, which is also abundant in yeast. Pantothenic acid contributes to fatty acid synthesis, and its deficiency may lead to the so-called "hot foot syndrome." However, no adverse effects have been observed from overconsumption. In addition to the aforementioned components, yeast contains vitamins B1, B2, B6, PP, folic acid, as well as zinc, selenium, and smaller amounts of calcium, phosphorus, and iron. Particularly noteworthy is the high zinc content, which is vital for the proper functioning of the body. Zinc is involved in the activity of over 100 enzymes, including those responsible for DNA synthesis. Its deficiency can lead to skin changes and, in adolescents, even stunted growth. Zinc is present in nearly all tissues. Due to their rich composition, yeast-based supplements are widely available in pharmacies. They are particularly recommended for adolescents and individuals with skin issues. Studies indicate that zinc deficiency is present in individuals with acne vulgaris. Supplementation with this mineral may yield beneficial effects in some cases. Vitamin PP may also prove helpful in treating acne, exerting anti-inflammatory and exfoliating effects, especially when applied topically. There are also home remedies for reducing acne, such as yeast-based masks.

The nutritional information aligns with the specifications outlined in the Annex to Implementing Regulation (EU) No 1308/2013.

The beneficial properties of yeast in skincare have been recognized since ancient times. It has been used to treat burns, skin conditions, and ulcers (reportedly in the form of a decoction with figs). Even today, yeast-based masks are recommended according to traditional remedies for addressing acne and other skin imperfections. There is also evidence suggesting that yeast may help reduce stretch marks, which occur due to reduced skin elasticity. Research conducted at the Medical University of Łódź confirmed the effectiveness of yeast extract in minimizing such skin changes. However, it is important to note that these treatments are most effective on recent skin alterations, as older ones tend to be more resistant to treatment.

If you're dealing with skin issues during puberty, it's essential to assess your diet and explore natural remedies. Remember that no home remedy can replace professional dermatological advice, and after starting pharmacological treatment, every step should be discussed with your doctor (everything applied to the skin has significant implications). Despite some reservations about home treatments, it's worth giving them a try.

Ingredients: 1 teaspoon of active dry yeast, 2 tablespoons of warm milk, and 1 tablespoon of raw honey. The yeast should be fully dissolved in the milk, then blended with the honey to form a smooth paste. Apply the mixture evenly to clean facial skin and leave it on for approximately 20 minutes.

Baker’s yeast and brewer’s yeast serve as a valuable source of bioactive compounds used in functional foods, particularly beta-glucans. Approximately 50% of yeast cell walls consist of these polysaccharides. Classified as soluble dietary fibers, beta-glucans, when consumed in adequate amounts, support immune function by enhancing the activity of immune cells. Animal studies have demonstrated that beta-glucan supplementation stimulates lymphocytes, macrophages, and neutrophils, thereby strengthening defense mechanisms against pathogens such as Staphylococcus aureus and Candida albicans. Additionally, improvements in lipid profiles were observed. Beta-glucans can also be derived from post-fermentation byproducts, such as those generated during beer production. The European Union recognizes them as safe food additives.

Creating a yeast beverage is remarkably straightforward. Simply dissolve one-third of a yeast cube in boiling water or hot milk. It is crucial that the high temperature reduces yeast fermentation activity. Therefore, it should not be mixed with low-temperature liquids, as this may result in unpleasant symptoms such as bloating and abdominal discomfort. This type of drink serves as an excellent way to supplement the body with B vitamins and zinc. It is particularly recommended for individuals suffering from juvenile acne. Unfortunately, there is no reliable evidence regarding potential side effects or the optimal duration of such treatment. Individuals with inflammatory bowel diseases (including Crohn's disease or ulcerative colitis) should refrain from consuming it.