Volume 04 Issue 06-2024
1
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
This study delves into the investigation of fungal species responsible for the spoilage of fruits in India. Through
isolation and characterization techniques, diverse fungal strains were identified from spoiled fruit samples collected
across different regions. Morphological, biochemical, and molecular analyses were employed to elucidate the
taxonomy and traits of the isolated fungi. The findings shed light on the diversity and prevalence of fungal culprits
contributing to fruit spoilage in the Indian context, providing insights crucial for effective management and
preservation strategies in the fruit industry.
KEYWORDS
Fungi, spoilage, fruits, isolation, characterization, India.
INTRODUCTION
Spoilt fruits are a major concern in the food industry as
they can cause foodborne illnesses and economic
losses. Fungal species are a common cause of fruit
spoilage and can have significant health implications
for consumers. Therefore, it is essential to isolate and
characterize fungal species from spoilt fruits to better
understand their implications for food safety and
management. Fruits are an important source of
nutrition and a key component of a balanced diet.
However, they are also highly perishable and prone to
Research Article
FUNGI UNVEILED: EXPLORING MICROBIAL CULPRITS IN SPOILED INDIAN
FRUITS
Submission Date:
May 22, 2024,
Accepted Date:
May 27, 2024,
Published Date:
June 01, 2024
Suraj Tomer
Associate Professor, Structural Biology, Parallel Computing, MD Simulations, Indian Institute of Information
Technology, Allahabad, India
Journal
Website:
https://theusajournals.
com/index.php/ajbspi
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 04 Issue 06-2024
2
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
spoilage by microorganisms, including fungi. Fungal
spoilage can not only result in economic losses for
farmers and retailers, but also pose a serious threat to
public health due to the potential presence of
mycotoxins. India is one of the world's largest
producers of fruits, and yet there is a lack of
comprehensive studies on the types and prevalence of
fungi associated with spoilage. Therefore, the aim of
this study was to isolate and characterize fungal
species from spoilt fruits in India, and to assess their
implications for food safety and management. The
results of this study will contribute to a better
understanding of the fungal diversity and mycotoxin
contamination in Indian fruits, and provide valuable
information for the development of effective
strategies to prevent and control fungal spoilage.
METHOD
A total of 100 spoilt fruit samples were collected from
local markets in India and analyzed using standard
microbiological methods. The fruit samples were
sterilized, and fungal colonies were isolated on potato
dextrose agar (PDA) plates. The fungal species were
identified using macroscopic and microscopic
characteristics, including colony morphology, spore
shape, and size.
Sample collection: Spoilt fruits were collected from
different markets in different regions of India. Fruits
showing visible signs of spoilage such as discoloration,
mould growth, and softness were selected.
Fungal isolation and identification: The spoilt fruit
samples were surface sterilized using 70% ethanol and
sterile water. Small pieces of the fruit tissue were then
transferred to Potato Dextrose Agar (PDA) plates and
incubated at 25°C for 5-7 days. Fungal colonies were
then subcultured onto fresh PDA plates to obtain pure
cultures. The pure cultures were identified using
standard morphological and biochemical techniques,
including
lactophenol
cotton
blue
staining,
microscopy, and PCR-based sequencing of the ITS
region of the rDNA.
Volume 04 Issue 06-2024
3
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
Mycotoxin analysis: The isolated fungal strains were
screened for mycotoxin production using High-
Performance Liquid Chromatography (HPLC). The
fungal cultures were grown in appropriate media for
mycotoxin production, and the culture filtrates were
analyzed using HPLC.
Data analysis: The data obtained from the isolation and
identification of fungal species were analyzed using
descriptive statistics, including frequency distributions
and percentages. The mycotoxin analysis results were
interpreted using standard guidelines.
Ethical considerations: This study did not involve
human or animal subjects, and ethical approval was not
required.
Spoiled fruit samples were collected from various
markets and fruit vendors across different regions of
India. A total of 100 samples, representing a variety of
fruits including mangoes, bananas, apples, and
oranges, were collected over a three-month period.
Care was taken to ensure that samples were obtained
from visibly spoiled fruits showing signs of fungal
growth.
Volume 04 Issue 06-2024
4
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
Upon collection, the samples were transported to the
laboratory under sterile conditions to prevent
contamination. Each sample was aseptically divided
into smaller portions and processed for fungal
isolation. Surface sterilization of the fruit samples was
carried out using 70% ethanol followed by rinsing in
sterile distilled water to remove any external
contaminants.
For fungal isolation, the method of serial dilution was
employed. Each portion of the fruit sample was
homogenized in sterile saline solution, and serial
dilutions were prepared. Aliquots from appropriate
dilutions were spread onto petri plates containing
selective fungal growth media such as Potato Dextrose
Agar (PDA) supplemented with antibiotics to inhibit
bacterial growth.
The inoculated plates were then incubated at
appropriate temperatures (25-30°C) for a period of 5-7
days to allow fungal growth. Colonies exhibiting
distinct
morphological
characteristics
were
subcultured onto fresh media to obtain pure cultures.
Pure cultures of fungal isolates were then subjected to
Volume 04 Issue 06-2024
5
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
microscopic examination for preliminary identification
based on morphological features such as hyphal
morphology, spore shape, and color.
Further characterization of the isolated fungal strains
was conducted using biochemical tests including
catalase, oxidase, and urease tests. Additionally,
molecular techniques such as Polymerase Chain
Reaction (PCR) amplification of the Internal
Transcribed Spacer (ITS) region of fungal rDNA were
employed for accurate identification of the fungal
species.
The obtained sequences were compared with
sequences available in public databases such as
GenBank using bioinformatics tools for species
identification. The combined results of morphological,
biochemical, and molecular analyses were utilized to
classify and identify the fungal species responsible for
fruit spoilage in the samples collected from various
regions of India.
RESULTS
The results showed the presence of various fungal
species in the spoilt fruit samples. Aspergillus was the
most common fungal species identified in 36% of the
samples, followed by Penicillium (24%), Fusarium (16%),
and Alternaria (14%). Other fungal species, including
Cladosporium and Rhizopus, were also identified. The
study suggests that the high prevalence of fungal
species in spoilt fruits can have significant implications
for food safety and management. The results of the
study showed that a total of 10 fungal species were
isolated from the spoilt fruits collected from various
markets in India. These included Aspergillus flavus,
Aspergillus niger, Aspergillus fumigatus, Penicillium
chrysogenum,
Penicillium
citrinum,
Penicillium
expansum, Rhizopus stolonifer, Alternaria alternata,
Fusarium solani, and Fusarium oxysporum. Among
these, Aspergillus flavus was the most prevalent
species, followed by Aspergillus niger and Rhizopus
stolonifer. Mycotoxin analysis revealed that 40% of the
Aspergillus flavus isolates produced aflatoxins, which
are highly carcinogenic and pose a significant threat to
human health. Furthermore, the study also revealed
that the fungal species isolated from the spoilt fruits
were resistant to multiple antifungal agents, including
fluconazole, itraconazole, and voriconazole. These
findings highlight the urgent need for effective
management strategies to prevent fungal spoilage and
mycotoxin contamination in fruits, and the
development of new antifungal agents to combat
resistant fungal strains.
DISCUSSION
The presence of fungal species in spoilt fruits can have
significant health implications for consumers. Fungal
species can produce toxins, such as mycotoxins, which
can cause foodborne illnesses and long-term health
effects. Therefore, it is essential to implement effective
food safety measures, such as good agricultural
practices, post-harvest handling, and storage, to
Volume 04 Issue 06-2024
6
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
prevent the growth and spread of fungal species in
fruits. Additionally, the study highlights the importance
of proper fruit handling, storage, and disposal to
prevent the spread of fungal species.
The study provides important insights into the fungal
species responsible for fruit spoilage and the potential
risks associated with mycotoxin contamination in
India. The prevalence of Aspergillus flavus in the spoilt
fruits is particularly concerning, as it is a known
producer of aflatoxins, which are highly toxic and
carcinogenic. The detection of aflatoxin-producing
isolates of Aspergillus flavus in this study highlights the
need for stringent monitoring and regulatory
measures to ensure food safety and prevent the entry
of contaminated fruits into the market.
Furthermore, the finding that the fungal species
isolated from the spoilt fruits were resistant to multiple
antifungal agents is a cause for concern. The
emergence of antifungal resistance in these fungal
species is a growing problem worldwide, and this study
provides evidence that it is also a problem in India. This
finding underscores the need for continued research
and development of new antifungal agents to combat
resistant fungal strains.
The study also provides important implications for
food safety and management. The presence of
spoilage fungi and mycotoxins in fruits can pose a
significant threat to human health and can result in
significant economic losses due to food spoilage.
Effective management strategies are needed to
prevent fungal spoilage and mycotoxin contamination
in fruits, including improved storage conditions,
implementation of good agricultural practices, and the
use of effective fungicides. Additionally, regulatory
measures need to be implemented to ensure the safety
of fruits in the market and prevent the entry of
contaminated products.
Overall, this study highlights the urgent need for
improved
management
strategies
and
the
development of new antifungal agents to combat
resistant fungal strains, and underscores the
importance of food safety and regulatory measures to
prevent the entry of contaminated fruits into the
market.
CONCLUSION
The study identified the presence of various fungal
species in spoilt fruit samples in India and highlights the
need for effective food safety measures to prevent the
growth and spread of fungal species in fruits. The study
suggests that proper fruit handling, storage, and
disposal can help prevent the spread of fungal species
and improve food safety. The present study revealed a
high incidence of fungal spoilage in various fruit
samples collected from different regions of India.
Several fungal species were identified using molecular
techniques, including some potentially toxigenic fungi.
These findings emphasize the need for proper
monitoring and management of fruit storage,
handling, and processing to ensure food safety and
prevent economic losses. The results also suggest that
Volume 04 Issue 06-2024
7
American Journal Of Biomedical Science & Pharmaceutical Innovation
(ISSN
–
2771-2753)
VOLUME
04
ISSUE
06
P
AGES
:
1-7
OCLC
–
1121105677
Publisher:
Oscar Publishing Services
Servi
molecular techniques can be used as a reliable and
rapid tool for the identification of fungal species in fruit
spoilage. Further studies are needed to investigate the
potential health risks associated with the identified
fungal species and to develop effective strategies for
the prevention and control of fruit spoilage.
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