![]() Therefore, for each batch of plant material used for industrial extraction, an analysis has to be performed to determine the amount of available extractives. The chemical composition of the plant material may highly vary depending on the local environmental conditions, development stages, plant part, harvesting season, the technique used for drying, and the storage condition. In the field of raw material extraction, the first challenge consists of determining the potential of the plant matrix that means what can be extracted and valorized. Results demonstrate that it is a rapid, clean, and environmentally friendly extraction technique. To complete the study showing that the use of PLE is an advantageous alternative to CSE, the eco-footprint of the PLE process was evaluated. ![]() A statistical comparison of the two extraction procedure (PLE and CSE) was achieved and showed no significant difference between the two procedures in terms of RA, CA, and CO extraction. PLE was further compared to conventional Soxhlet extraction (CSE) in term of global processing time, energy used, solvent recovery, raw material used, accuracy, reproducibility, and robustness to extract quantitatively RA, CA, and CO from rosemary leaves. An experimental design was applied to identify an optimized PLE set of extraction parameters: A temperature of 183 ☌, a pressure of 130 bar, and an extraction duration of 3 min enabled recovering rosemary antioxidants. Within this objective, pressurized liquid extraction (PLE) was investigated to determine the initial composition of key antioxidants contained in rosemary leaves: Rosmarinic acid (RA), carnosic acid (CA), and carnosol (CO). ![]() That said, I will probably have this thing built and running in a month or two.ĭamn, I feel like I actually accomplished something today.Nowadays, “green analytical chemistry” challenges are to develop techniques which reduce the environmental impact not only in term of analysis but also in the sample preparation step. I should be ordering some needed pieces, and I assure you that they WILL be coming on a slow boat from China. There would be 18 tri-clamps and 18 gaskets. I could scale the design up to hold a whole lot more, but I am a personal extractor, not big time.īTW: don’t rip on me about clamps and gaskets…I didn’t include them in the count, because I am referring to major pieces. As configured, this would hold only about 60gm of material, but it’s a soxhlet…change your sample. Once you add a boiler pot, and a reflux tower, it is still less than 5 feet tall, and 19 total pieces. Really nice thing about it is that the whole extractor portion is only 29" tall and consists of a total of only 15 pieces, and every piece is tri-clamp. I have designed a completely stainless steel, all tri-clamp system, complete with vacuum takeoff. It took quite a while, but I finally worked out a design that will accomplish this. This made me think about building a soxhlet from all tri-clamp pieces. Bad thing about it is that everything is usually glass, and so fragile and small.
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