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where is cellulose derived from
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Historically, pistachios were dyed red to hide imperfections on the shells caused by traditional harvesting and processing methods. Before modern mechanical harvesting, pistachios were picked by hand, leaving stains and blemishes on the shells. The red dye made them more appealing to consumers and helped mask these cosmetic flaws. Additionally, the vibrant red color attracted buyers when most nuts were sold in bulk from bins, making pistachios stand out. However, with advances in harvesting and processing technology, the need to dye pistachios has diminished. Most pistachios available today retain their natural color, which ranges from beige to green, as improvements in processing have significantly reduced the appearance of blemishes, and consumer preference has shifted towards more natural-looking food products.
Several studies have linked artificial color dyes to cancer, though the subject remains controversial and extensively debated. Notably, Red 3 (Erythrosine) has been linked to thyroid cancer in rats, prompting the FDA to ban its use in cosmetics and externally applied drugs, although it is still permitted in food and oral medications. Similarly, there has been concern over Yellow 5 (Tartrazine), which some research suggests might be carcinogenic, though evidence is not conclusive. It's important to note that the International Agency for Research on Cancer (IARC) and other regulatory bodies continually review and update the status of food additives, including dyes, based on emerging evidence. Consequently, it's advisable to stay informed through reliable sources and perhaps moderate consumption of foods with artificial dyes, especially if there are pre-existing health concerns or family history of cancer.
Determining the amount of yarn needed from gauge involves a few steps. First, understand your gauge; this is typically given in stitches and rows per inch or centimeters, based on a sample swatch knit or crocheted in the pattern you intend to use. If you're following a pattern, it often specifies the gauge you should achieve. To calculate the amount of yarn, you also need to know the dimensions of the finished project. Multiply the gauge by the project dimensions to get the total number of stitches. The final piece of the puzzle is knowing the yarn's length per unit (found on the yarn label), which allows you to calculate how much yarn is needed for the total stitches. There's also a practical approach: many patterns provide estimated yarn quantities, which can serve as a useful guideline adjusted for your gauge. Beginners may find it safer to buy a bit extra to account for adjustments or errors.
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