Abstract: The present disclosure discloses a Bacillus licheniformis cell stably and repeatedly used for the conversion and synthesis of D-psicose, and belongs to the field of biotechnology. D-psicose is a functional sugar with high health value and has broad application prospects in food, medicine, health care and other fields. The B. licheniformis cell of the present disclosure efficiently expresses recombinant D-psicose-3-epimerase, and can convert high-concentration fructose as a substrate into D-psicose. After the whole-cell catalyst is reused 10 times, the conversion rate is not less than 30%. Compared with pure enzyme or single-use whole-cell conversion methods, this technology for the synthesis of D-psicose has significant advantages such as low catalyst cost and simple separation and purification.

Abstract: Method and apparatus for electronic detection and determination includes detecting a signal T0 in a detection zone and a signal R0 in a reference zone before a sample is added; adding a sample and detecting the signals in each of the detection zone and the reference zone at an interval of a second preset period; calculating a judgement value based on 2k immediately previous signals in each of the detection zone and the reference zone, the signal T0 in the detection zone before the sample is added, and the signal R0 in the reference zone before the sample is added, each time when k successive signals are detected in each of the detection zone and the reference zone; and determining a judgement result based on m successive judgement values and a preset result threshold corresponding to a current detection time.

Abstract: The present invention relates to a device and method capable of rapid and automated online measurement of antibody titers in antibody production. The device incorporates a fully automated affinity-column based instrument.

Abstract: Method and apparatus for electronic detection and determination includes detecting a signal T0 in a detection zone and a signal R0 in a reference zone before a sample is added; adding a sample and detecting the signals in each of the detection zone and the reference zone at an interval of a second preset period; calculating a judgement value based on 2k immediately previous signals in each of the detection zone and the reference zone, the signal T0 in the detection zone before the sample is added, and the signal R0 in the reference zone before the sample is added, each time when k successive signals are detected in each of the detection zone and the reference zone; and determining a judgement result based on m successive judgement values and a preset result threshold corresponding to a current detection time.