Changes in microstructures of rambutan seed and the quality of its fat during drying

Jahurul, M.H.A.; Nee, S. S.; Norazlina, M.R.; Mamat, Hasmadi; Sharifudin, M. S.; Matanjun, Patricia; Lee, J. S.; Shihabul, A.; Amir, Hermansyah; Jumardi, Jumardi; Noorakmar, A.W.; Norliza, J.

doi:10.1007/s42452-020-2649-8

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…Due to the porosities inside, the TC seeds were not only easily broken by pressing force but also easily absorbed solvent for oil extraction. In many previous studies, the oleaginous seeds were often dried or heated for creating more porosities inside before oil extraction, and the scanning electronic microscope were used to evaluate the inside microstructure of the materials [48][49][50].…”

Section: Effect Of the Tree Age On Seed Weight And Seed Oilmentioning

confidence: 99%

Effect of some Cultivation Factors and Extraction Methods on Terminalia Catappa L. Seed Oil

Nguy

Hien

Đao

2022

International Journal of Food Science

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Terminalia catappa L. is a common tropic tree for shade and ornament in many countries. Recently, Terminalia catappa L. seed oil has been considered as a new oleaginous seed for dietary and biofuel production. In this study, ripe Terminalia catappa L. fruits originated in Vietnam were collected and seed oil extracted. In our experiment conditions, the effect of tree location, tree age, and annual harvest time on seed weight and seed oil content was investigated. As results, the seeds at the eastern site of the ground obtained not only the biggest size (3.607 g) but also contained the highest oil mass percentage (56.38%). The suitable annual harvesting time for the good seed quality was from March to April. In addition, the Terminalia catappa L. seeds for oil extraction began being harvested in the fourth year with 55.88% oil content compared to 55.99% of the five and six-year-old and trees. After seed drying, the seed oil was extracted by five different methods including cold screw pressing, hot screw pressing, hydraulic pressing, and solvent extracting, and combining method (cold screw pressing then solvent extraction of oil cake). Among the physical methods, cold screw pressing observed the highest oil yield of 77.32%, and the good oil quality was obtained with low free fatty acid (0.550% oleic acid), low acid value (1.080 mg KOH/g oil), and low peroxide value (1.240 meq O2/kg oil). However, the combination of cold screw pressing and cake oil extracting by solvent increased the oil yield by 14.61%. The saponification values fluctuated between 196 to 197 mg KOH/g oil, while the iodine values were in the range of 77.00 and 79.89 g I2/kg oil.

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Section: Effect Of the Tree Age On Seed Weight And Seed Oilmentioning

confidence: 99%

Effect of some Cultivation Factors and Extraction Methods on Terminalia Catappa L. Seed Oil

Nguy

Hien

Đao

2022

International Journal of Food Science

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“…In Thailand, the rambutan output is approximately 218.6 thousand tons per year, and 11.85 thousand tons of rambutan were exported at a cost of around USD 7.2 million in 2021-2022 [1]. Rambutan is industrially processed into canned fruit, juice, jam, and spread, which generates seed waste that is approximately 10% of the fresh fruit's weight or 26,592 tons annually [2]. The nutritional compositions of rambutan seeds have been reported in many literatures [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effects of Defatting Pretreatment on Polysaccharide Extraction from Rambutan Seeds Using Subcritical Water: Optimization Using the Desirability Approach

Nilmat,

Hunsub,

Ngamprasertsith

et al. 2024

Foods

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Rambutan seeds are by-products generated from fruit-processing factories; the leftover seeds are buried in landfills, generating methane emissions. This work aimed to extract polysaccharides (POLS) from rambutan seeds by using subcritical water extraction (SWE). The effects of defatting pretreatment and operating parameters in SWE were investigated using a Box–Behnken design. The results show that defatting pretreatment significantly enriched the POLS yield, while it had no significant effect on the total sugar content. Using the desirability approach, the suitable feedstock for SWE was defatted rambutan seeds. The maximum desirability of 0.86 was found at a temperature range of 145–150 °C, an extraction time of 15 min, and a liquid–solid ratio of 10:1. The POLS yield and total sugar content were in the range of 52.33–55.63 g/100 g feedstock and 83.37–87.45 g/100 g POLS, respectively. The extracted POLS had an equivalent molecular weight of 413.70 kDa that could be used as an extender in plant-based products. In conclusion, the defatting pretreatment of rambutan seeds not only improved the POLS yield obtained via SWE but also generated additional lipids that could be utilized as an unconventional source of specialty fat.

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Effect of various drying methods on changes of physical and chemical properties of butterfly pea flower (Clitoria ternatea L.)

Kususmastuti,

Karyadi,

Ma'rufah

et al. 2023

2nd International Conferences on Sciences and Mathematics (2nd Icsm)

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Changes in microstructures of rambutan seed and the quality of its fat during drying

Cited by 4 publications

References 39 publications

Effect of some Cultivation Factors and Extraction Methods on Terminalia Catappa L. Seed Oil

Effect of some Cultivation Factors and Extraction Methods on Terminalia Catappa L. Seed Oil

Effects of Defatting Pretreatment on Polysaccharide Extraction from Rambutan Seeds Using Subcritical Water: Optimization Using the Desirability Approach

Effect of various drying methods on changes of physical and chemical properties of butterfly pea flower (Clitoria ternatea L.)

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