Recovery of Phytochemicals from Kokum (Garcinia indica choisy) Using Pressurized Hot Water
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Mamata Mukhopadhyay
A novel process has been developed for the recovery of phytochemicals such as, ? -HCA from kokum (Garcinia indica choisy) rinds using hot water pressurized with carbon dioxide, followed by its purification. The performance of the pressurized hot water extraction (PHWE) process has been evaluated to ascertain the optimum process parameters for maximizing the recovery of ? -HCA. A systematic parametric study has been undertaken by varying the important parameters in the ranges of 30-120 °C for temperature, 1-20 atm for pressure, 30-60 min of extraction time, 4 - 22 ml/g of water to feed ratio, 1-3 number of stages , 0-350 rpm of stirring, presence of salt, nature of feed, and grinding. Ethanol is added to the aqueous extract from kokum rinds for the removal of pectinous materials by precipitation. Quantification of ? -HCA in the product has been carried out by the titration method with 0.1N NaOH solution. The maximum recovery is obtained when PHWE is carried out at 90 °C above which the recovery decreases. Pressure does not have much effect on the recovery of ? -HCA beyond a certain pressure required to maintain the extractant in the liquid phase. More ?-HCA is recovered by 2-stage PHWE from ground dry kokum than from salty kokum rinds.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Artikel in diesem Heft
- Article
- Drying Kinetics of Osmotically Pre-Treated Plum Tomato Pieces
- A Linear Driving Force (LDF) Approximation of Moisture Diffusion Kinetics in White Rice
- Effects of Different Coagulation Temperatures on the Texture and Yield of Soy Paneer (Tofu)
- Study on Immobilization Methods of Acetylcholinesterase
- Osmo-Convective Dehydration of Plum (Prunus salicina L)
- The Transfer of Ingested Plant and Enterobacterial Gene Fragments into Mice Bodies and Their Shift to the Livers of Suckling Mice Through Mother's Milk
- The Effects of Varieties and Moisture Content on Some Physical and Aerodynamic Properties of Sesame Seeds (Sesamum indicum L) as Related to Cleaning
- Mathematical Modeling of Thin Layer Drying Kinetics of Apple in Tunnel Dryer
- The Effect of Additives on Vacuum Dried Honey Powder Properties
- The Purification, Formulation and Drying of Papain
- Antioxidant Activity of the Flower of Nyctanthes arbor tristis L.
- Milk Cholesterol Reduction Using Immobilized Lactobacillus acidophilus ATCC1643 in Sodium-Alginate
- Recovery of Phytochemicals from Kokum (Garcinia indica choisy) Using Pressurized Hot Water
- The Drying Constant and its Effect on the Shrinkage Constant of Different-Shaped Food Particulates
- Shorter Communication
- Effectiveness of Antioxidant Properties of Fresh and Dry Rhizomes of Curcuma longa (Long and Short Varieties) with Dry Turmeric Spice
