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Questions related from Mandeep Gulati
Can anyone explain me how to prepare this standard solution step by step or refer me some paper where each step is explained. My doubt is how to dilute different concentrations for TEP ? by ethanol?
16 January 2025 4,461 1 View
Hello, I have performed DSC for my pure pigment sample and pigment mixed with PVA but, there is no peak observed in the graph. Samples were dried well and there was one heating cycle from 30 to...
18 December 2024 3,162 2 View
Hello, This question is not naive and is easy to answer. But I would like to understand the basics of methods being followed across different laboratories where active/biopolymeric films are...
17 December 2024 2,253 5 View
Hello, I am trying to spray dry my material (hydrophilic) using PVA, but yield is the problem. During drying, my PVA material is sticking inside the drying chamber as it as film forming...
20 August 2024 5,315 5 View
I am trying to perform optimization studies for which I want to use RSM but my concern is to which design to use for my study like there is central composite, Box behennken, etc. Kindly help me...
23 June 2023 2,132 1 View
I'm performing iodine value test to find the unsaturation present in the oil. but I am facing problem at the endpoint is colorless. I'm not getting what is wrong with the wijs solution that I'm...
22 June 2023 2,910 0 View
How to obtain Relative humidity 75% using NaCl ? How much Nacl needs to be dissolved in water in order to make saturated soltuion?
02 May 2023 9,537 2 View
I have been trying to extract anthocyanin using different concentrations of alcohol. For that TPC, TAC and Antioxidant activity (DPPH method) are the following analysis that I'm performing. So,...
15 March 2022 9,132 10 View
Hello Research fellows, I need to design some figures for my project. Can anyone please suggest some free software or tools for the same other than MSpowerpoint/publisher? Thanks in advance
04 March 2022 5,899 5 View
I'm performing the DPPH Assay for my plant extract. So with an increase in the conc of extract (20,40,60,80,100), either the % is decreasing or showing an irregular pattern. Also, it is showing...
21 February 2022 4,144 13 View
Hi, I want to check the UV barrier property for my biopolymer film. I have read papers on procedures and all. But I'm confused between what is UV screening, UV-Barrier property, and light...
28 September 2021 5,377 0 View
I am making methylcellulose films by soln casting method and drying at room temperature. But some of my films are having shrinkage having an uneven surfaces. what can be the possible reasons for...
21 September 2021 751 1 View
Hi, I am checking the antioxidant activity of polyphenols using the DPPH reagent. I'm taking a 0.1mM reagent. I tried two 3 things. I'm using ethanol as a solvent for my extract. 1. I made DPPH...
16 September 2021 6,729 7 View
