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What are the grading standards for Panax notoginseng seeds?
Grade 1 seeds: thousand-grain weight greater than 105 grams, moisture content less than 60%, viability greater than 85%, purity greater than 98%. Grade 2 seeds: thousand-grain weight between 100 and 105 grams, moisture content greater than 60%, viability greater than 80%, purity greater than 97%. Grade 3 seeds: thousand-grain weight between 95 and 100 grams, moisture content greater than 60%, viability greater than 75%, purity greater than 90%. Panax notoginseng seeds are laterally flattened or triangular-ovoid, 5 to 7 mm long, 4 to 6 mm in diameter, yellowish-white
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A Detailed Guide to the Harvesting Standards and Processing Methods for Goji Berries
1. Harvesting requirements: Medicinal goji berries (Lycium barbarum) ripen successively from June to November and should be harvested at the right time. They can be picked when the fruit turns from green to red or orange-red and the fruit stalk and flesh become slightly soft. If picked too early, the fruit is not plump and its color after drying is dull; if picked too late, the sugar content is too high and the fruit easily drops off, becoming dark purplish-black after sun-drying or oven-drying (commonly known as oil seeds) and losing its commercial value. Picking is best done after 10 a.m. on a clear day. Never pick fruit after rain or when covered with dew. Handle it gently when picking and remove it together with the fruit stalk. Otherwise, the juice will flow out and affect its internal quality.
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