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            Y291920 YNB 無氨基酸酵母氮源
             產品貨號: Y291920
             產品名稱: Y291920 YNB 無氨基酸酵母氮源
             產品價格/規格: 100g 350元
             產品說明書: 暫無
             更新時間: 2022-03-22
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            • Yeast Nitrogen Base without amino acids



              Appearance……………….white to off-white powder

              Solubility…………………...clear to slightly hazy yellow solution at 0.67% (w/v) in water

              說明:Yeast Nitrogen Base without Amino Acids is used for classifying yeasts based on amino acid and carbohydrate requirements. It contains all essential vitamins and inorganic salts necessary for the cultivation of yeasts except histidine, methionine, tryptophan and a source of carbohydrate.

              Preparation instructions:

              1. Prepare a 10× stock solution by suspending 6.7 g of yeast nitrogen base, 5 g of glucose or an equivalent amount of other carbohydrate, and 5-10 mg of the desired amino acid in 100 mL of distilled water.

              2. Warm if necessary to solubilize and sterilize by filtration.

              Store 10× stock solution at 2-8 °C. To use, dilute 1:10 with sterile distilled water under aspetic conditions.

              100g            350元           貨號:Y291920


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