Studies on the Phenolic Acid Contents in Different Parts of Raw and Ripe Jackfruit and Their Importance in Human Health

International Journal of Applied Science-Research and Review www.ijas.org.uk Original Article Studies on the Phenolic Acid Contents in Different Parts of Raw and Ripe Jackfruit and Their Importance in Human Health Amitabh Singh*1, Sudarshan Maurya2, Mandavi Singh3, Udai Pratap Singh4 1Doon School of Agriculture and Allied Sciences, DBS-Group, Selaqui, Dehradun, Uttarakhand, India 2ICAR – Research Complex for Eastern Region, Research Centre, Palandu, Ranchi, Jharkhand, India 3Department of Anatomy, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221005, India 4N-8/236, R-22, Ganesh Dham Colony, Newada, Sunderpur, Varanasi-221005, India A R T I C L E I N F O A B S T R A C T Received 29 Nov. 2014 Received in revised form 20 Dec. 2014 Objective: To assess the phenolic acid content of skin, pulp, covering Accepted 15 Jan. 2015 pulp of seed and seed of raw and ripe jackfruit (Artocarpus heterophyllus). Keywords: Methods: High Performance Liquid Chromatographic (HPLC) analysis Artocarpus heterophyllus; was done of various parts of raw and ripe jackfruits. HPLC; Phenolic acids. Results: Raw fruit skin was rich in gallic (22.73 µg/g) followed by tannic and ferulic acids. In ripe fruit, the skin had high amount of ferulic (13.41 µg/g) and reduced amount of gallic (12.08 µg/g) acids. The level of tannic acid (5.73 µg/g) was the same as that in raw fruit skin. Flesh of raw fruit had three phenolic acids where gallic acid was maximum followed by ferulic and tannic acids. However, flesh of ripe fruit had high amount of gallic (19.31 µg/g) and low amount of ferulic (2.66 µg/g) acids. Tannic acid was slightly high as compared to raw fruit skin. Raw and ripe pulp of the seeds was rich in phenolic acids. The raw pulp showed more phenolic acids than ripe fruit pulp. Raw fruit pulp of seed had three phenolic acids, viz., gallilc, tannic, and ferulic acids. But in ripe fruit the amount and number of phenolic acids were significantly less, e.g., only two phenolic acids, i.e., gallic and ferulic acids were detected. Raw fruit seed showed four phenolic acids, i.e., gallic, tannic, caffeic and ferulic acids. However, in ripe fruit seed only three phenolic acids were Corresponding author: Doon School of found, i.e., gallic, ferulic and tannic acids. Agriculture and Allied Sciences, DBS- Conclusion: The presence of good amount of phenolic acids in various Group, Selaqui, Dehradun, Uttarakhand, edible parts of raw and ripe Jackfruit indicates the nutritional value of India jackfruits and the likely benefits it can provide to human health. E-mail address: [email protected] © 2015 International Journal of Applied Science-Research and Review All rights reserved Singh et al______________________________________________________ ISSN: 2394-9988 INTRODUCTION Jackfruit (Artocarpus heterophyllus induced secondary metabolites play Lam)., belongs to the family Moraceae, significant role to protect them against along with Ficus spp. (fig), Morus spp. various adverse climatic conditions10-13. The (mulberry), and Maclurapomifera Schneid biosynthetic pathway of phenolic (osage orange or hedge apple)1. It is compounds is derived from the shikimate popularly known as the poor man’s food in pathway and the backbone of phenolic the eastern and southern parts of India2. Ripe compounds are aromatic amino acids 14. fruits are rich source of vitamins A and C Role of plant phenolics in inducing along with some minerals3. It provides good resistance in plants is well documented in amount of carbohydrates. Young jackfruits the literature10,15. Results of the present and their seeds are commonly used as experiments reveal the presence of some vegetables and pickles. The ripe fruits are phenolic acids in different parts of jackfruit. not liked by some people because of its Their role in human health is described here. strong flavour. The ripe fruits are also used in squash and toffee. The skin of the fruits MATERIALS AND METHODS and leaves are excellent cattle food4. Changes in primary metabolites during Randomly selected three fruits of the ripening of fruits are reported by some same age at raw and ripe stage were workers 5 but reports about the changes in harvested and pooled together to make one secondary metabolites in raw and ripe fruits sample of each part of the fruit. One gram of are limited. Szecsko et al.6 reported that the freshly harvested fruit parts (skin, pulp, polyphenol oxidase (PPO) and endogenous covering pulp of seed and endocarp of seed) phenolic acid contents varied from season to were finely crushed with 5-10 ml of ethanol water (80-20; v/v), ultrasonicated (15 season. They also reported that the amounts 0 of phenolic substances act as inhibitors and minutes at 4 C) (Branson Sonifier, USA) stimulators of various enzymes, i.e., and centrifuged (15 minutes at 7500 rpm). polyphenol oxidases and peroxidases in the The supernatant was subjected to charcoal plants during the dormant spell. Seeds of treatment for removal of pigments. jackfruits are rich source of protein and its Extraction of the residue was done once amount varies considerably during different again, supernatant was pooled with the growth stages. The mature seeds contain a previous extraction and evaporated under protein termed as jacalin which possesses vacuum. The dried samples were re- diverse biological properties7. A. suspended (in 1.0 ml methanol of HPLC heterophyllus is rich source of primary and grade), filtered (membrane filter of pore size 0.45 µm, Millipore) and analyzed by secondary metabolites having medicinal 16 properties7,8. Wetprasit and Chulavatnatol 9 HPLC . The HPLC (Shimadzu Corporation, isolated lectin from A. heterophyllus which Kyoto, Japan) equipment was comprised a is specific for alpha monomer galectoside UV-VIS detector (Shimadzu SPD-10 AVP), with an aromatic residue. Jacalin, a C-18 reversed phase column (Phenomenex, USA) of 250 X 4.6 mm id with particle size tetrameric two-chain lectin (66,000 Mr) 0 isolated from A. heterophyllus seeds is 5 µm, and the samples were run at 25 C. highly specific for the tumor associated T- The mobile phase used was a mixture of antigenic disaccharides. methanol-0.4 % aqueous acetic acid (66:34, Plants have developed efficient v/v), flow rate was set at 1 ml/min, injection protective defense mechanisms against volume was 5 µl and detection was done at various diseases where pre-existing and 290 nm. The samples were analyzed thrice IJAS [2][3][2015] 069-073 Singh et al______________________________________________________ ISSN: 2394-9988 and the means of the individual compounds moré compared to the raw fruit pulp of seed. were considered for quantification. Different Phenolic acid in raw and ripe fruit seeds phenolic compounds such as ferulic, varied significantly. Four phenolic acids chlorogenic, gallic, tannic, vanillic, caffeic, (gallic, tannic, caffeic and ferulic acids) and cinnamic acids were used as internal were detected in raw fruit seeds where gallic and external standards. Qualitative analysis acid (11.3 µg/g) was maximum followed by of the phenolic compounds in the samples tannic (6.59 µg/g), caffeic (2.84 µg/g) and were done by two methods viz., by ferulic (2.38 µg/g) acids. However, there comparing the retention time (Rt) of was only three phenolic acids (gallilc, standards as well as by co-injection. ferulic and tannic acids) in which gallic acid (11.3 µg/g) was maximum followed by RESULTS AND DISCUSSION ferulic (2.71 µg/g) and tannic (2.1 µg/g) acids (Table 1.). Analysis of various parts of raw and The HPLC analysis of different parts ripe jackfruits collected at different stages, of raw and ripe fruits showed varying showed significant difference in phenolic number and amount of phenolic acids. Most acids. Raw fruit skin was rich in gallic of the jackfruit samples had gallic and (22.73 µg/g fresh wt.) followed by tannic ferulic acids in common. HPLC analysis (6.70 µg/g) and ferulic (4.635 µg/g) acids indicated that phenolic acids are abundantly but the skin had same phenolic acids in present in raw fruit which is eaten mostly as which the amount of ferulic acid (13.41 vegetables and pickles. Kabir (1995) 7 µg/g) increased but gallic acid (12.08 µg/g) reported that the low molecular weight of drastically decreased. However, the amount protein, i.e., jacalin, is present in raw fruit of tannic acid (5.73 µg/g) was the same as seed but totally absent in ripe fruit. Strong compared to raw fruit skin. Flesh of raw anti-inflammatory activity of gallic acid fruit also had three phenolic acids, i.e., towards zymosan-induced acute food pad gallic, ferulic and tannic acids, where gallic swelling was reported in mice17. Further, in acid (9.7 µg/g) was found maximum, vitro studies revealed that gallic acid followed by ferulic (8.04 µg/g) and tannic interferes with the functioning of (4.87 µg/g) acids. However, in pulp of ripe polymorphonuclear leukocytes (PMNs) as fruit, the amount of gallic acid (19.31 µg/g) well as scavenging of superoxide anions and was almost double, while ferulic acid (2.66 inhibit myeloperoxidase release and activity. µg/g) was drastically reduced but tannic acid Sarma and Singh (2003)13 and Maurya et al. (5.24 µg/g) increased a little as compared to (2007)18 reported that ferulic acid has potent raw pulp of fruit skin. Raw and ripe pulp of antimicrobial properties. Strong antioxidant the seed was rich in phenolics as compared activities of jackfruit pulp extracts was to ripe fruits covering pulp of the seed. Raw reported earlier5 and the same is correlated fruit pulp of seed had three phenolic acids in with the total phenolic and flavonoids which gallic acid (11.05 µg/g) was content in the samples.

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