Cider Words: Yeast Survival Factors

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Yeast Survival Factors: The Impact to Cider Fermentation Yeast Survival Factors are also commonly referred to as oxygen substitutes(1) or anaerobic growth factors(2). These are compounds that ensure yeast viability under stress and ultimately, the survival of the yeast. The compounds include sterols, fatty acids, and peptides. You might be thinking that Yeast Survival Factors … Continue reading Cider Words: Yeast Survival Factors

Cider Words: Yeast Domestication

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Industrial yeasts show signs of domestication that started before yeast were even identified. Industrial yeast, generally Saccharomyces cerevisiae, are used to make numerous alcoholic beverages as well as biofuel and bread. They live in human constructed environments and show signs of domestication. Domestication simply means that an organism adapts to a human constructed environment so … Continue reading Cider Words: Yeast Domestication

Cider Words: Mitosis versus Meiosis

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Budding versus Sporulative Most yeast cells are capable of reproducing asexually, a process called mitosis, and sexually, a process called meiosis. The most common form of asexual reproduction for fermenting yeast, especially Saccharomyces cerevisiae, is budding. Asexual reproduction is most common when resources are abundant. Sexual reproduction is generally the process yeast pursue in times … Continue reading Cider Words: Mitosis versus Meiosis

Cider Words: Maturation

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Maturation: The time needed to make a cider ready to drink. Maturation is defined as the time it takes cider or wine to become ready to drink. I like to broaden that definition to mean the time a cider is stored without preservatives after primary fermentation finishes. I also often call this aging. You can … Continue reading Cider Words: Maturation

Apple Phenolics: Fuji

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Phenolic Compounds of Fuji Apples Fuji is such a common apple that unless you live in the historical cider regions of France, England, or Spain, you will probably be wondering if it makes a good cider. It was developed in Japan in the 1930s and is the offspring of the American Red Delicious and Virginia … Continue reading Apple Phenolics: Fuji

Cider Words: Light Struck

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The impact of light on cider. Does light pose a risk to hard cider? Beer is bottled in amber bottles to prevent what is called light struck or skunky beer. This occurs when photosensitive iso-alpha acids form 3-methyl-2-butane-1-thiol (MBT). MBT has a skunk odor. If hard cider includes hops, it can form this fault as … Continue reading Cider Words: Light Struck

Cider Words: Maillard Reactions

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Maillard Reactions Create Color and Aroma In 1912, French chemist Louis Camille Maillard identified a chemical reaction between amino acids and reducing sugars. Amino acids are the building blocks of proteins and reducing sugars are those like glucose, fructose, and sucrose. This is a common reaction in bread and baked foods but also occurs in … Continue reading Cider Words: Maillard Reactions

Cider Words: Yeast Derivative Products (YDPs)

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Yeast Derivative Products (YDPs) can aid fermentation, turbidity, and aroma. Have you ever heard of Yeast Derivative Products (YDPs)? If you are exposed to the wine industry, you have probably come across them as they are becoming more widely used in that industry. Rarely do I hear about there use in cider. I should clarify … Continue reading Cider Words: Yeast Derivative Products (YDPs)

Apple Phenolics: Winesap

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Winesap Phenolic Compounds Winesap is an heirloom apple variety in America and it was the parent of numerous other apples including various Winesap seedlings. Stayman Winesap is an example of a Winesap seedling that is commonly found in the United States. Arkansas Black apples are also thought to be a seedling of Winesap. While originally … Continue reading Apple Phenolics: Winesap

Cider Words: Natural Preservatives

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Preservatives naturally found in hard cider Fermenting apple juice and making hard cider will naturally create compounds that act as preservatives. These compounds, like SO2 and CO2, can be added but, I am focusing on how these compounds are naturally created. The compounds are produced by lactic acid bacteria (LAB) and yeast in your juice … Continue reading Cider Words: Natural Preservatives