Sherlyn Tang

11 Questions 6 Answers 0 Followers

Questions related from Sherlyn Tang

Can someone please help me to classify the image into alpha, beta and gamma haemolysis?

Dear all researchers, can you please help me to double confirm the result that I obtained in haemolytic test into alpha, beta and gamma group? This is the first time I performing this test and...

06 June 2016 1,095 21 View

Is there anyone who can provide the salting out protocol for butyrate extraction?

Dear all researchers, can anyone provide me a salting out protocol for butyric acid extraction? Tq.

01 January 2016 1,991 8 View

Is there any titration method for vitamin A (retinol) detection?

Dear all researchers, I get to know there is titration method for vitamin C, but how about vitamin A? I am looking for the alternative method instead of using HPLC. Is there any suggestion? Tq.

11 November 2015 280 2 View

Why will contamination disappear when repeating a test for the same sample on the next day?

Dear researchers, Recently, I have been facing mysterious test results. I was collecting samples of probiotic cultures from a large fermenter tank into 100mL lab bottle under sterile conditions,...

10 October 2014 7,682 4 View

Does anyone kindly check for me regarding the following protocol for complexometric titration of Zn?

I'm not a chemist and does not know much about the theory behind the zinc titration method. I have a sample and wold like to test for the zinc content. Following is the protocol that I have...

10 October 2014 4,540 4 View

Do you think that zinc, iodine, Vitiman A, Vitamin D3 or Vitamin B2 can reduce the growing rate of probiotics?

04 April 2014 5,095 2 View

Can I autoclave the MRS medium with pH 1?

see above

03 March 2014 4,855 1 View

Can anyone help me to check on the protocol of probiotic microencapsulation?

I did the experiment a number of times but am still not able to get the expected results. I would like to seek help from everyone. The protocol is as follows: 1. Dissolve maltodextrin and...

03 March 2014 6,264 12 View

Why is the incubation time for probiotic cells to grow in milk shorter than in MRS broth?

I am wondering why the incubation time for probiotic cells to grow in milk is shorter than in MRS broth. According to the protocol, the bacteria strains need to culture in MRSB for 3 days before...

03 March 2014 9,866 3 View

Is there any drying method that can be used to replace spray drying?

May I know is there an alternative drying method that can be used to replace spray dryer? The sample used will be encapsulated bacterial cells.

03 March 2014 9,719 1 View

Will a change in sequence of adding prebiotic and maltodextrin influence the microencapsulation results?

I would like to seek your advice towards the strange result that I have obtained during my microencapsulation process. I was preparing two samples as follows: 1. Add fructo-oligosaccharide...

02 February 2014 3,473 1 View