【摘要】 测定了由光合细菌 Ｐ９４７９ 株与酵母 Ｙ９４０７ 株经原生质融合构建的跨界融合子 Ｆｏａｚ 及其亲株在净化豆制品废水反应中０ 、０ ．１ 、５ ．０ 、１０ ．０ 、１００ ．０ ｍｇ／ Ｌ Ｆｅ３ ＋ 质量浓度和０ 、１５０ 、３００ 、４００ 、８００ ｍｇ／ Ｌ Ｍｇ２ ＋ 质量浓度下的β－类胡萝卜素色素含量及 Ｂ Ｏ Ｄ５ 去除效率．结果表明， Ｆｅ３ ＋ 对融合子 Ｆｏａｚ 及光合细菌中β－ 类胡萝卜素的合成有明显的促进作用，当ρ（ Ｆｅ３ ＋ ） 为５ ．０ ｍｇ／ Ｌ 时，融合子 Ｆｏａｚ 及光合细菌中β－ 类胡萝卜素的质量分数ｗ 达到最高水平，分别为４ ．９ ｍｇ／ｇ 和２ ．４ ｍｇ／ｇ ．而 Ｍｇ２ ＋ 对融合子及其亲株中β－ 类胡萝卜素的合成有一定抑制作用更多还原

【Abstract】 The inter-kingdom fusant cell Foaz was constructed from the protoplast fusion between Rhodobacter sphaeroides and Saccharomyces cerevisiae . The levels of β -carotene in the fusant cell and its parantal strains were determined in the reaction solution with different concentrations of Fe 3+ and Mg 2+ . The results showed that Fe 3+ might promote the production of β -carotene for the fusants and R. sphaeroides . Especially, the mass fraction of β -carotene could reach the highest levels which were 4.9 mg/g for the fusant and 2.4 mg/g for R.sphaeroides , respectively, while the mass concentration of Fe 3+ was 5.0 mg/L. But Mg 2+ could inhibit the production of β -carotene in the fusant and its parental strains.更多还原