Valorizing Citrus Waste: Unlocking Nutrients, Bioactives and Processing Solutions by Subhra Saikat Roy, Manju Gurjar, Sharanya Paliwal, Darshana Admane, and Dilip Ghosh is a comprehensive exploration into the untapped potential of citrus fruit waste. With citrus being one of the most widely produced fruits globally, a significant portion—up to 50%—often ends up discarded during processing. This book reimagines that waste as a resource rich in nutrients, fiber, bioactive compounds, and industrially valuable materials. It delves into modern, eco-friendly extraction techniques such as microwave-, ultrasound-, and enzyme-assisted processes that enable the recovery of essential oils, flavonoids, pectin, and other high-value compounds.

The authors present a practical and scientific roadmap for transforming citrus waste into functional ingredients for use in food, pharmaceuticals, cosmetics, and even biofuels, advocating a holistic biorefinery approach. The book also emphasizes the socio-economic and environmental benefits of such valorization—reducing pollution, creating new revenue streams, and supporting a circular bioeconomy. Aimed at researchers, industry professionals, and sustainability advocates, this volume bridges the gap between waste management and resource innovation, positioning citrus by-products as a key component in the future of sustainable processing.

Valorizing Citrus Waste: Unlocking Nutrients, Bioactives and Processing Solutions
Dr. Subhra Saikat Roy joined the Agricultural Research Service in 2008. He earned his Doctoral Degree in
Horticulture from Bidhan Chandra Krishi Viswavidyalaya, West Bengal, possessing an excellent academic
career, receiving the University Gold Medal (UG) and Certificate of Merit (PG). With over 16 years of research
experience in horticulture, he served ICAR Research Complex for NEH Region from 2008 to 2022 and is
currently working as Principal Scientist at ICAR-Central Citrus Research Institute, Nagpur, Maharashtra. His
major research interests include phytochemical profiling, bioprospecting, valorization, post-harvest technology,
and value addition of citrus. From his role as Principal Investigator in twelve projects, Co-Investigator in
twenty-one projects and Supervisor in five post-doctoral fellowship projects, Dr. Roy has developed many
technologies, including seven crop varieties, five IFS models, five organic POPs, more than ten value-added
products, commercialized eight technologies, and filed one patent. Additionally, he has incubated over 30
agripreneurships. Dr. Roy has published more than 50 research papers in the journals of national and
international repute, 15 books, 45 book chapters, 21 success stories, 1 technology inventory, 1 database, 25
bulletins and manuals, over 100 popular articles, 1 mobile app and 27 Genbank accesseions. Dr. Roy has
organized one National Seminar (2016) and one International Conference (2023) as Convenor, Asian Citrus
Congress – 2023 as Organizing Secretary and more than five National Seminars as Co-organizing Secretary/Co-
Convenor. He is also the Editor of a peer-reviewed journal, a Fellow of three professional societies, and a
recipient of many prestigious awards, including Fakhruddin Ali Ahmed Award conferred by ICAR, New Delhi
in 2018 and National Entrepreneurship Award (Ecosystem Builder Track – Mentor) conferred by the Ministry
Skill Development and Entrepreneurship, Govt. of India in 2019. Dr. Roy was also a visiting scholar at
Michigan State University, USA.

Ms. Manju Gurjar holds a M. Sc degree in Microbiology from Post Graduate Teaching Department of
Microbiology (P.G.T.D), Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, Maharashtra, India and
qualified ASRB-NET exam in discipline “Agricultural Microbiology”. She is “Certified Peer Reviewer” by
Elsevier Researcher Academy. She has more than 8+ years of research experience. During this tenure, she
worked as a Project Assistant in the project entitled “Consortium Research Platform on Agro-biodiversity (CRP-
AB)” funded by Indian Council of Agricultural Research (ICAR), New Delhi; as a Junior Research Fellow and
is currently working as Young Professional-II in the project entitled “NAIF Project: Intellectual property
Management & Transfer/Commercialization of Agricultural Technology” at ICAR-Central Citrus Research
Institute, Nagpur, Maharashtra. She has published fifteen research articles in several national and international
journals, six popular articles and filed one patent. She has attended seven workshops and one international
conference. She has received four Best research paper awards and two best poster awards in National level
conferences. Her broader research interests are in the field of microbiology, phytochemicals and bioactive
compounds, antioxidant potential and have gained experience in post harvest management and processing of
citrus.
Sharanya Paliwal has completed her Master’s degree in Chemical Technology with specialization in Food
Technology (Gold Medalist) from Laxminarayan Institute of Technology (LIT), Nagpur and Bachelor’s degree
in Chemical Engineering (Gold Medalist) from Institute of Technology, GGU, Bilaspur (2017-2021). She is
presently working as a Young Professional-I in NAIF Component II - Agri-Business Incubation Centre at
ICAR-Central Citrus Research Institute, Nagpur, Maharashtra. She is determined towards the development of
various new products, including ready-to-serve (RTS) beverages, carbonated soft drinks (CSDs), confectionary
products, sweets, and bakery products. Her major research interests include post-harvest management
technology,  functional food product development, value-addition and analysis of food products, phytochemical
analysis and citrus waste management technology. She has published three articles in national journals. She also
has research experience in renewable energy generation and green technology development from agricultural
wastes and their management.
Darshana Admane is currently an Application Technologist in Beverages at DSM-Firmenich, Bengaluru,
Karnataka. She has played a pivotal role in the development of various new beverage products, including
alcoholic drinks, ready-to-drink (RTD) beverages, and carbonated soft drinks (CSDs). Darshana specializes in
creating innovative solutions and premiumizing alcoholic beverages. She also possesses expertise in sensory
evaluation, market product mapping, and application deep dives. Darshana is pursuing a Ph.D. in Chemical
Technology (Food Technology) from Laxminarayan Innovation Technological Innovation, Nagpur,
Maharashtra. She earned her master’s degree in chemical technology (Food Technology) from the
Laxminarayan Institute of Technology, Rashtrasant Tukdoji Maharaj Nagpur University, Nagpur, Maharashtra
(2018-2020). With over two years of experience as a Young Professional (I) at ICAR, Central Citrus Research
Institute, Nagpur, Maharashtra (2021-2023), Darshana has contributed to innovative product development at the
Agri-Business Incubation Centre. Her major research areas include new product development, post-harvest
technology, citrus waste management technology and value-added products. Darshana has qualified for the
National Eligibility Test (NET) in 2022 and the Maharashtra State Eligibility Test (MH-SET) in 2021 for the
position of Assistant Professor in Home Science. She has published two book chapters, one research article and
two review paper.
Dr. Dilip Ghosh, Director, ICAR-CCRI, Nagpur, obtained his Master’s and Doctoral degree in Plant Pathology
specializing in Plant Virology from ICAR- Indian Agricultural Research Institute, New Delhi and subsequently
joined ICAR-CCRI, as Scientist in 1995. He has made an outstanding contribution in the area of Citrus
Pathology/Virology and citriculture. He has developed PCR/ Real time-PCR/ Duplex PCR/IC-PCR based
diagnostics of Citrus greening, Citrus tristeza virus, Citrus yellow mosaic virus, Indian Citrus ring spot virus,
Exocortis viroid, and Citrus Phytoplasma for rapid and sensitive detection of these systemic pathogens in
infected citrus plants. He has also developed LAMP-based and RPA-LFA-based Rapid Diagnostic Kits for
Citrus greening disease and Citrus tristeza virus.Identified Candidatus Phytoplasma cynodontis as the causal
organism of Witches’ Broom Disease of acid lime (WBDL) in India (New world report). Similarly, first time
reported hop stunt viroid infection of citrus in India. As an international FAO consultant, Dr. Ghosh worked in
Nepal and Bhutan. Also organized three international training programs for the participants of Oman, Bhutan
and Nepal in Nagpur apart from organizing six such national training programs. Visited nine different countries
including USA, Brazil, China, Thailand, Vietnam, Nepal, Bhutan etc and made professional collaborations /
networks with citrus scientists working in those countries. Handled a total of 14 research projects funded by
ICAR, NATP, NAIP, DBT, DST, MIDH etc, published 60 research papers in high impact factor journals (35
articles in NAAS ratings > 7.0), co-authored 4 books; published over 16 book chapters, 20 extension bulletin, 2
folders, 5 extension calendars, 4 training manual, 5 other publications and 480 NCBI GenBank Accessions. Dr.
Ghosh organized two national conferences/workshops (2006 and 2015) as Organizing Secretary, Asian Citrus
Congress - 2023as Convenor and guided 7 PhD students. As a multidisciplinary team of scientists, received

ICAR-Sardar Patel Outstanding ICAR Institution Award-2005 for outstanding contribution in the field of citrus
production and processing. Inrecognition of his professional achievements, Dr. Ghosh also received Prof. J.F.
Dastur Memorial Award (Indian Phytopathological Society); Dr R S Paroda Award of CHAI (2022), New
Delhi, Outstanding Plant Virologist Award at Asian Plant Science Congress (Nepal, 2014) etc. He also acted as
Editor, Plant Pathology (UK); Member, MISA (USA); Member, Mashalkar (Ex-DG, CSIR) Committee of
Biotechnology (Govt of Maharashtra), President of Indian Society of Citriculture(2022-2025), President, Indian
Phytopathological Society and bestowed with the Fellowship from four different scientific societies of India.