© 2018, IJSRBS All Rights Reserved 32
International Journal of Scientific Research in _______________________________ Research Paper .
Biological Sciences
Vol.5, Issue.3, pp. 32-35, June (2018) E-ISSN: 2347-7520
Emerging fungal contaminants isolated and identified from raw fennel seeds
Chinju Merin Abraham
1*
, Tincy Mary Thomas
2
1
Department of Botany, Catholicate College, Pathanamthitta, India
2
Department of Botany, Catholicate College, Pathanamthitta, India
*Corresponding Author: First author- chinjujoby@gmail.com, Tel.:+91-9846129284
Available online at: www.isroset.org
Received: 21/May/2018, Revised: 30/May/2018, Accepted: 17/Jun/2018, Online: 30/Jun/ 2018
Abstract - The present investigation entitled “Emerging fungal contaminants isolated and identified from raw fennel seeds”
recorded the diversity of surface contaminant fungi from 144 fennel seeds of different A/C and non-A/C hotels of town area of
Pathanamthitta district of Kerala, which were cultured on PDA medium. All fungal species were identified on the basis of their
morphological and microscopic characteristics and it includes Aspergillus niger, Aspergillus fumigatus, Chrysonilia sitophila,
Mucor sp., Rhizopus sp., Cercospora sp. and Cylindrocarpon sp. The study revealed its colonization frequency, counted the
fungal colony numbers, determined the percentage of different fungal isolates and finally compared the A/C and non-A/C seed
contaminants. And from the study, it was clear that samples from non-A/C hotels shows maximum fungal growth than A/C
hotels. These emerging fungal contaminants can cause serious pathogenic conditions such as aspergillosis, zygomycosis,
occupational asthma etc.
Keywords – Fungal contaminants, Fennel seeds, Pathanamthitta, PDA medium, Colonization frequency, Aspergillosis
1. INTRODUCTION
The contamination of spices by fungus is a serious issue
being faced nowadays. Many spices are traditional herbs and
medicinal indigenous ingredients since a long time, herbal
medicines have been used in the management of several
diseases [1]. Fennel seed is a common south-Indian spice that
has serious issues in relation with its fungal contamination.
Fennel plants are biennial or perennial aromatic herbs with
anticancerous property [2, 3].
Many species of fungi are responsible for the contamination
of the fennel crops before harvest or during storage by the
production of aflatoxin [4]. Aflatoxins are acutely toxic,
immunosuppressive, mutagenic, teratogenic and carcinogenic
compounds. Spices on storage are heavily contaminated with
the xerophilic storage moulds and bacteria [5]. The most
frequent fungal contaminant of spices is the species from
Aspergillus and Penicillium [6]. Although spices are present
in foods in small amounts, they are recognized as important
carriers of microbial contamination mainly because of the
conditions in which they were grown, harvested and
processed [7]. Eating contaminated raw spices may lead to
the intake of many mycotoxins [8].
It is a common practice, particularly in the South-Indian
culture to chew raw fennel seeds after meals and these spices
being the part of our Indian food culture and also it aids in
digestion. It is necessary to create awareness to public about
the improper handling of fennel seeds that leads these seeds
as a host for several pathogenic organisms. Thus the present
work focuses on the harmfulness on consuming contaminated
raw fennel seeds. From the colonization frequency and other
datas analysed, it was clear that all the seeds collected were
heavily contaminated by the fungal pathogens. The
mycotoxins produced by these pathogens can cause serious
ill-effects like aspergillosis, zygomycosis, occupational
asthma, mucormycosis etc.
II .MATERIALS AND METHODS
Plant material- Raw seeds of Foeniculum vulgare Miller [9]
Systematic position
Kingdom: Plantae
Division : Angiospermae
Class : Dicotyledoneae
Order : Umbellales
Family : Apiaceae
Collection of seeds sample:
For the present investigation, raw fennel seed samples were
collected from six different A/C and non-A/C hotels of town
area of Pathanamthitta district, uniformly during the month of
March-April 2017. Each sample were collected in a separate
sterile polythene bags and brought to the laboratory for
further studies.