Journal of Food, Agriculture and Environment

Fruit quality of 12 provenances of Idesia polycarpa in China

Author(s):

Li Dai, Yanmei Wang, Zhen Liu *, Fei Li, Haiyang Wang

Recieved Date: 2014-01-10, Accepted Date: 2014-03-30

Abstract:

The aim of this study was to evaluate differences in fruit quality of 12 different provenances of Idesia polycarpa distributed throughout China. The mature fruit (seeds and pulp) of 12 provenances of I. polycarpa were used as the experimental materials. The oils were extracted from seeds and pulp using the Soxhlet method. The oil content of the seeds and pulp, the fatty acid composition of the oil, and the relative oil content were determined and analysed. The methyl-esterified oils were analysed by gas chromatography mass spectrometry. The oil content of seeds ranged from 12.60% to 28.17%. The oil content of pulp ranged from 28.38% to 48.35%. The mean oil content of fruit was 31.36%. The iodine concentration ranged from 112.6 to 139.7 mg·g^-1 in the seed oil and from 108.2 to 137.1 mg·g^-1 in the pulp oil. The saponification value ranged from 191.2 to 194.6 mg·g^-1 in the seed oil and from 196.2 to 205.6 mg·g^-1 in the pulp oil. The cetane number ranged from 43.2 to 49.3 mg·g^-1 in the seed oil and from 43.3 to 55.0 mg·g^-1 in the pulp oil. The fruit could be made into biodiesel, and based on the properties of the oils, the pulp was a better raw material than the seeds for biodiesel production. In total, we detected 12 different fatty acids in the fruit; 10 were detected in the seeds and 12 were detected in the pulp. The most abundant fatty acid was linoleic acid, which accounted for 78.64% to 83.81% of seed oil, and 62.05% to 72.64% of pulp oil. The proportion of unsaturated fatty acids was greater in seed oil (87.95%–90.68%) than in pulp oil (75.73%–86.66%). These results show that fruit of I. polycarpa from Guiyang and Luoyang were the best resources for biodiesel production, because they showed the highest oil content, the highest cetane number, the lowest iodine concentration, and the highest contents of linoleic acid and unsaturated fatty acids. The effective sunshine duration and accumulated rainfall from March to October (the fruit maturation period) were significantly positively correlated with the thousand kernel weight, seed oil content, and saponification value of seed oil, and with the proportion of unsaturated fatty acids in the pulp oil.

Keywords:

Idesia polycarpa, fruit quality, oil content, TKW, iodine concentration, saponification value, cetane number, fatty acid, biomass energy, distribution area

---

Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Environment
Pages: 802-807

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :