我希望你能担任AI 写作导师起到英语翻译、拼写校对和修辞改进的角色。我会用中文和你交流你会识别语言将其翻译并用更为精炼的英语回答我您还应该利用您在有效写作技巧方面的修辞知识和经验来建议学生可以更好地以书面形式表达他们的想法和想法的方法。请仅回答更正和改进的部分不要写解释。请翻译我的第一句话是：ΔG、ΔGG、ΔGGG标准品是利用褐藻胶裂解酶Aly7B制备的完全【】降解G6标准品后通过30 PG凝胶柱

The ΔG, ΔGG, and ΔGGG standards are prepared using alginate lyase Aly7B to completely degrade the G6 standard, followed by purification using a 30 PG gel column. As an AI writing mentor, I will assist you in English translation, spelling and grammar correction, and refinement of your writing style. I will use my language recognition skills to translate your Chinese language and provide you with a more concise and polished English response. Additionally, I will utilize my expertise in effective writing techniques to advise students on how to better express their ideas and thoughts in written form. Please only provide the sections that require correction or improvement without any explanations