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Product diversification from pomelo peel. Essential oil, Pectin and semi-dried pomelo peel

100%

Le T. N. H. , On T. N. H. , Tran T. Y. N. , Dao T. P. , Mai H. C.

Polish Journal of Chemical Technology

2021

tom Vol. 23, nr 4

17--25

Currently, agriculture has shifted to green production, in which the recycling of post-production by-products is a key issue. In the present work, by-products such as pomelos were studied to promote consumption and enhance the value of pomelo. From pomelo material, essential oils extracted from pomelo peels, pectin, and drying pomelo products have been diversifi ed. In the extraction process of essential oils, the hydrodistillation method was applied in conjunction with the response surface method to obtain the optimal conditions of infl uence factors. These essential oils were quantifi ed as well as determined for components by GC-MS. The pectin recognition process was done by immersion method in HCl acid (pH 2) and the drying process was made with a heat pump dryer under the effects of drying temperature, drying time and wind rate. The results of the essential oil products reached the highest (0.88 ±0.006 g) at the material size of 3 mm, the distillation time of 27 min, and the ratio of raw materials/solvents of 1/12 g/mL. The main components found in pomelo peeling essential oils included limonene (71.768%), γ-terponene (12,847%), α-Phellandrene (2.979%), β-myrcene (2.668%), 1R-α-pinene (2,656%), and β-pinene (1,191%). The pectin content was the highest under the temperature of 90 oC, extraction time of 60 min and ratio/solvent ratio of 1:32 g/mL. Under these extraction conditions, 48% of concentrated pectin content was obtained. Surveying conditions for drying white pomelo peels are capable of reversing: refunded drying pomelos are drying heat pumps in the following conditions: 50 oC drying temperature, the drying time of 90 min, and wind rate of 12 m/s. Product with hardness 309.862 N.

Owoce cytrusowe w lecznictwie. Cz.IV

51%

Lamer-Zarawska E.

Wiadomości Zielarskie

2001

tom 43

nr 07-08

24-26

Cytrusy malo znane

32%

Goller K.

Kwietnik

1995

nr 09

Smaczna kompozycja

32%

Goller K.

Kwietnik

2001

nr 04

26-27