Extraction Processes of Virgin Coconut Oil

Agarwal, Ravindra Kumar

doi:10.15406/mojfpt.2017.04.00087

Cited by 42 publications

(33 citation statements)

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“…The product referred to as 100% virgin coconut oil had been extracted from fresh coconuts through a process known as "wet milling" with minimal processing and no chemical or heat treatment during the production process. The refined coconut oil product had been produced through a "dry milling" process where the oil was extracted from baked coconuts and then bleached to remove microbes [24,38,39].…”

Section: Methodsmentioning

confidence: 99%

Edible Oils as Practical Phase Change Materials for Thermal Energy Storage

Kahwaji

White

2019

Applied Sciences

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Edible oils could provide more accessible alternatives to other phase change materials (PCMs) for consumers who wish to build a thermal energy storage (TES) system with sustainable materials. Edible oils have good shelf life, can be acquired easily from local stores and can be less expensive than other PCMs. In this work, we explore whether margarine, vegetable shortening, and coconut oil are feasible PCMs, by investigations of their thermal properties and thermal stability. We found that margarine and vegetable shortening are not useful for TES due to their low latent heat of fusion, ΔfusH, and poor thermal stability. In contrast, coconut oil remained thermally stable after 200 melt-freeze cycles, and has a large ΔfusH of 105 ± 11 J g−1, a low degree of supercooling and a transition temperature, Tmpt = 24.5 ± 1.5 °C, that makes it very useful for TES in buildings. We also determined coconut oil’s heat capacity and thermal conductivity as functions of temperature and used the measured properties to evaluate the feasibility of coconut oil for thermal buffering and passive heating of a residential-scale greenhouse.

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Section: Methodsmentioning

confidence: 99%

Edible Oils as Practical Phase Change Materials for Thermal Energy Storage

Kahwaji

White

2019

Applied Sciences

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“…Virgin coconut oil (VCO) is an edible oil extracted from the fresh and mature endosperm of the coconut ( Cocos nucifera L ) and it is the minimal processed product of coconut oil (CO). [ 1 ] VCO can be processed from coconut copra using mechanical or natural methods, either with or without heat treatment without affecting the final quality of VCO. Coconut milk is a natural oil‐in‐water (O/W) emulsion stabilized by proteins.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic and Mechanical Extraction of Virgin Coconut Oil

Soo

Yassoralipour

Lai

et al. 2020

Euro J Lipid Sci & Tech

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The effect of different processing methods namely enzymatic method using crude protease extract (CPE) from overripe pineapple, microwave-assisted extraction (MAE) and ultrasound-assisted extraction (UAE) methods on the recovery yield of virgin coconut oil (VCO) is evaluated. The physicochemical properties of VCOs namely color, iodine value (IV), refractive index, saponification value, moisture content, free fatty acid, p-anisidine value, lipid peroxidation, fatty acid composition, triacylglycerol (TAG) composition, melting and crystallization profile are compared. The total phenolic compounds and scavenging activity of the extracted VCOs are also examined. Results reveal that enzymatic approach exhibits the highest VCO yield (77.7% ± 0.38) at 50°C for 2 h, followed by MAE (58.6%±0.07), control without enzyme (24.1%±0.19) and UAE (24.1%±0.12). The physicochemical properties of the VCOs extracted are found to conform to APCC standards established except IV. The antioxidant activity of VCO extracted with CPE shows no significant difference with MAE and UAE methods (p > 0.05). Lauric acid appears to be the most abundant fatty acid detected in all VCO samples. Similar exotherms and endotherms are observed in both melting and crystallization profiles with two distinct peaks exhibited. The TAG compositions of the extracted VCOs are mainly LaLaLa, LaLaM, CLaLa, CCLa, and LaMM (C = Capric acid; La = Lauric acid; M = Myristic acid). Practical Applications: The results obtained from this study indicate that VCO extraction using CPE from overripe pineapple is feasible.

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“…The oil extraction process mainly consists of four stages (Agarwal & Bosco, ), namely, Prepreparation, where the copra is retrieved from the silo and passed through cutters to reduce the particle size to less than 8 mm for at least 85% of the material. Cooking, where the material is heated through steam with the help of a steam jacket. The temperature of copra is gradually increased from 35°C to 90°C.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to the oil content, the moisture content of the copra plays a crucial role in the oil extraction process and drives the market price of copra. Typically, moisture content of <7% is acceptable to the industry (Agarwal & Bosco, ). High moisture content can make the copra vulnerable to fungal and pestilential attack.…”

Section: Introductionmentioning

confidence: 99%

Near‐infrared reflectance spectroscopy based online moisture measurement in copra

Lakshmanan

Chinnu

Arvamuthan

2020

J Food Process Engineering

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Moisture in raw Copra (dried mature coconut) is an important quality parameter in the process of extraction of Coconut oil. The online and instantaneous measurement of moisture in copra chips with Near‐Infrared Reflectance Spectroscopy (NIRS) has been explored in this work. To do so, a NIRS moisture sensor with in‐house designed wireless backhaul network was commissioned at an industrial‐scale oil mill in Southern India. The accuracy of the results was validated with laboratory‐tested values. Furthermore, a chemometric analysis of NIRS signals captured from copra samples was carried out to accurately measure the moisture content. The moisture sensor was interfaced with a Supervisory Control and Data Acquisition (SCADA) system through a wireless communication network designed and developed in‐house. The system was trialed for 13 months. The system enabled for monitoring the process parameters of the oil extraction process from a safe and convenient distance away from critical instruments. The moisture content values predicted by the online NIRS sensors closely matched laboratory values (over 70% of the data was within the standard allowable tolerances). The system enabled for smarter operation, aided in improving process capability, reduced manpower, and energy requirements. Practical Applications The moisture content of the copra plays a crucial role in the oil extraction process and drives the market price of copra. Typically, moisture content of <7% is acceptable to the industry. High moisture content can make the copra vulnerable to fungal and pestilential attack. The in‐situ and online measurement of moisture can help improve the process of extraction of oil by considering optimum moisture and temperature. Through this process, the oil extraction efficiency and yield can be increased. By adaptively adjusting the temperature of the cooker, the energy requirements of running the plant are also optimized.

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Extraction Processes of Virgin Coconut Oil

Cited by 42 publications

References 0 publications

Edible Oils as Practical Phase Change Materials for Thermal Energy Storage

Edible Oils as Practical Phase Change Materials for Thermal Energy Storage

Enzymatic and Mechanical Extraction of Virgin Coconut Oil

Near‐infrared reflectance spectroscopy based online moisture measurement in copra

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