Gopinadhan Paliyath

Gopinadhan Paliyath
University of Guelph | UOGuelph · Department of Plant Agriculture

B.Sc. Ed., M. SC., PH. D.

About

216
Publications
38,391
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6,843
Citations
Additional affiliations
March 1988 - present
University of Guelph
Position
  • Professor

Publications

Publications (216)
Article
Experiments were conducted at the Sokoine University of Agriculture to assess the effects of hexanal at (0.02%) (volume/volume) and calcium chloride (2%) (weight/volume), on post-harvest quality of mango (‘Palmer’ and ‘Apple’) under different storage conditions and durations. A three factors factorial experiment was used for each variety and replic...
Article
Full-text available
Honeycrisp' (Malus domestica Borkh.), a premium applecultivar, is highly susceptible to bitter pit and decline in quality during long-term storage. In order to enhance the quality, an aque-ous composition containing hexanal was applied as a preharvest spray. The effects of hexanal were assessed on the treated fruit and compared with Harvista TM (a...
Article
Full-text available
Mango is a highly preferred seasonal tropical fruit with a maximum shelf-life of five to seven days. Hexanal is a plant volatile compound assayed in green tissues and showing significance in enhancing storage life and fruit quality attributes by preserving membrane integrity. This experiment explored the effect of the pre-harvest application of an...
Article
Full-text available
Apples (Malus domestica Borkh) are prone to preharvest fruit drop, which is more pronounced in ‘Honeycrisp’. Hexanal is known to improve fruit retention in several economically important crops. The effects of hexanal on the fruit retention of ‘Honeycrisp’ apples were assessed using physiological, biochemical, and transcriptomic approaches. Fruit re...
Preprint
Full-text available
Apples ( Malus domestica Borkh) are prone to pre-harvest fruit drop which is more pronounced in ‘Honeycrisp’. Using a transcriptomic approach, we analyzed the molecular mechanisms of fruit retention in ‘Honeycrisp’. A total of 726 differentially expressed genes (DEGs) were identified in the abscission zone of hexanal-treated and untreated fruit (FA...
Article
Hexanal slows down the ripening process in fresh produce by inhibiting the activity of phospholipase D, thereby increasing their shelf life. This study focused on comparing the single time exposure and continuous exposure of post-harvest of ‘Anjou’ and ‘Bartlett’ pears to hexanal by dipping or fumigating to enhance their shelf life. Continuous expo...
Article
Phospholipase D (PLD) is a key enzyme involved in membrane lipid catabolism. Hexanal, a C6 volatile aldehyde is a strong PLD -inhibitor, and has been observed to enhance the shelf life and quality of horticultural produce. In the present study, the effect of hexanal vapor exposure on the postharvest quality and ripening response of bell pepper frui...
Article
‘Honeycrisp’ is a popular apple variety among consumers due to its desirable flavour and characteristic texture. However, this variety is highly prone to pre-harvest fruit drop, bitter pit and decline in quality during long-term storage. This research investigated the effects of hexanal as a formulation (named by us as Enhanced Freshness Formulatio...
Article
Postharvest technologies play a key role in enhancing shelf life and maintaining quality characteristics of tender fruits, such as nectarines (Prunus persica [L.] Batsch var. nectarina). This research investigated the effects of an enhanced freshness formulation (EFF), containing hexanal as the key ingredient, in enhancing the shelf life of field g...
Article
Full-text available
Hexanal, a C-6 aldehyde has been implicated to have antimicrobial properties. Hence, this study was conducted to determine the antifungal activities of hexanal vapor against major postharvest pathogens of banana viz., Colletotrichum gloeosporioides and Lasiodiplodia theobromae. The pathogens were cultured in vitro and exposed to hexanal vapor at 60...
Article
Hexanal is a naturally occurring bioactive volatile compound which extends post-harvest shelf life of fruits and vegetable by preserving the cell membrane from degradation. The aim of this study is to encapsulate hexanal in a polymer and activate its release in presence of relative humidity replicating the fruit packaging environment. Fiber loaded...
Article
Phosphatidylinositol 3-kinases (PI3Ks) are characterized by the presence of a C2 domain at the N-terminal end (class I, III); or at both the N-terminal and C-terminal ends (class II), sometimes including a Plextrin homology domain and/or a Ras domain. Plant PI3Ks are analogous to the class III mammalian PI3K. An N-terminal fragment (~170 aa) of the...
Article
Post-harvest loss negatively impacts food security, nutrition and economic stability of farmers, exporters, traders and consumers. Experiments were conducted to assess the effects of post-harvest techniques on the shelf life of Apple and Palmer mango cultivars under different storage conditions. Post-harvest losses of these fruit along the supply c...
Chapter
Fruits, vegetables and flowers are highly perishable commodities with a short window of postharvest life. Over-ripening of fruit results in nutritional loss and significant postharvest loss. Several methods are currently in use to prolong the postharvest life of produce. Deterioration of cellular membranes and the loss of membrane integrity have be...
Book
A comprehensive introduction to the physiology, biochemistry, and molecular biology of produce growth, paired with cutting-edge technological advances in produce preservation
Article
Full-text available
laboratory study was undertaken to determine the effects of a nano-emulsion carrying hexanal, an enhanced freshness formulation (EFF), as a post-harvest dip technology to minimize the post-harvest losses and to extend the shelf life of bananas. The banana fruits were harvested at three maturities (95%, 85%, and 75%), dipped or not dipped in the EFF...
Article
Full-text available
Aim: The objective of the present study was to investigate the influence of hexanal formulation on delaying ripening as well as its impact on quality attributes of mango cultivars Banganapalli and Alphosno. Methodology: Treatments included 2% hexanal formulation pre-harvest spray at 15 and 30 day before harvest, post-harvest dip for two minutes, co...
Chapter
Bell pepper and tomato are two economically very important solanaceous crops grown and consumed globally. Postharvest losses of sweet bell peppers are estimated at 25‐35 percent of total production. Rapid pre‐cooling of pepper is essential after harvesting in order to minimize postharvest losses and to preserve the freshness of produce. Forced‐air...
Chapter
In general wines are rich in polyphenols that include anthocyanin pigments (which give red wines their color), tannins (which give red wines their bitterness), and flavonoids. This chapter describes the effect of an antioxidant formulation on the quality of red wines. It evaluates the effect of preharvest sprays of hexanal compositions on the key f...
Chapter
Sweet cherry is highly appreciated by consumers for its red color, sweetness, size, flavor, and health benefits. Skin color, fruit size, firmness, flavor, sweetness, and sourness are some of the major quality determinants of sweet cherries. Storage temperature can affect the postharvest deterioration of quality in cherries. Proper storage temperatu...
Chapter
Ripening and senescence involve the last phase of molecular and biochemical changes that result in the transformation of fruits into an edible form with aesthetically superior organoleptic and nutritional qualities. Ethylene is a key signal molecule that regulates a multitude of processes including seedling growth, organ development, abscission, ri...
Chapter
Floriculture is a major avenue of income for many people across the world. The senescence process in most flowers is essentially similar to that in fruits, initiated by ethylene and involving the catabolic breakdown of phospholipids. The carnation flower system is an ideal model system for studying the effect of compounds that may enhance the shelf...
Chapter
Ripening is an important event that leads to the development of organoleptic qualities in fruits. Ripening and senescence are closely associated events that cannot be clearly defined. Membrane deterioration is a common fundamental feature of stress and senescence in horticultural produce during postharvest storage. The plasma membrane is a highly d...
Article
A comprehensive introduction to the physiology, biochemistry, and molecular biology of produce growth, paired with cutting-edge technological advances in produce preservation Revised and updated, the second edition of Postharvest Biology and Nanotechnology explores the most recent developments in postharvest biology and nanotechnology. Since the pu...
Chapter
Apple is one of the most popular temperate fruits and is widely consumed for its numerous health benefits. Spontaneous fruit drop close to the time of harvest is a major issue in some apples. Apples show different levels of fruit drop, but some varieties are highly prone to this problem. Preharvest spray application of hexanal formulation can be hi...
Chapter
This chapter focuses on some key causes of the lack of food security and how these causes may be averted, since many are anthropogenic in origin. Recent studies suggest that children in advanced countries experience allergies and immune system‐related problems while those living in underdeveloped countries rarely have food allergies and are resista...
Chapter
Blueberry is one of the commercially valuable berry fruits. To meet the continuously increasing demand, there is a need to improve the postharvest storage technologies currently in use for this valuable crop. There are two types of blueberries, highbush and lowbush. Appearance of fruit (color, size, and shape), firmness or texture, and flavor (pH,...
Article
Full-text available
The study was conducted to determine the efficacy of hexanal applied either as pre-harvest spray or post-harvest dip in enhancing the shelf life of banana var. Grand Nain. The study was done in Meru County (high potential zone) and Machakos County (low potential zone) of Kenya. Two hexanal concentrations (2 % and 3 %) were sprayed either once (at 3...
Article
Full-text available
Maintaining the quality of perishable commodities during storage and transportation remains a challenge to the fruit and vegetable industry in many countries. In order to minimize post-harvest loss, a hexanal incorporated composite material (HICM) was created using hexanal, banana fibre, polymeric materials, and biopolymers. Efficacy of the HICM wa...
Article
Full-text available
Hexanal and benzaldehyde are naturally-occurring aroma compounds from plants with enzyme-inhibition and antimicrobial properties. Although useful for food preservation applications, the end-use of these compounds can be challenging due to their volatility and susceptibility to oxidative degradation. In this study, stable precursors for benzaldehyde...
Article
Membrane deterioration is an inherent aspect of the advancement in senescence and loss in fruit quality during storage. Postharvest technologies used for extending shelf life and quality are targeted to reduce membrane damage through downregulating or blocking ethylene action. In this study, mature green tomato fruit were treated with inhibitors of...
Article
Background As universal energy currency, intracellular ATP (iATP) shortages in horticultural crops during postharvest stresses and senescence. In addition to function as intracellular energy currency, ATP serves as friendly extracellular signaling molecule (eATP). Scope and approach Postharvest treatments attenuate stresses, delay senescence and ma...
Article
Full-text available
Volatile metabolites emitted from mango fruits artificially inoculated with two toxigenic fungi isolated from infected mangoes were profiled using gas chromatography/mass spectrometry. A noteworthy differential expression of volatile metabolites was observed. The chromatographic profiling study afforded a total of 88 different volatile compounds. H...
Article
Post-harvest technologies play a key role in enhancing shelf life and maintaining quality characteristics of tender fruits such as nectarines (Prunus persica [L.] Batsch var. nectarina). This research investigated the effects of an ‘Enhanced Freshness Formulation’ (EFF) with hexanal as the key ingredient in enhancing shelf life of field grown necta...
Article
Aqueous compositions of hexanal, an inhibitor of phospholipase D, has been shown to enhance the shelf life and quality of fruits and vegetables. In the present study, sweet bell pepper fruit were exposed to hexanal vapor and its effect on quality attributes, shelf-life, and antioxidant enzyme activities were evaluated during storage at 7 day interv...
Preprint
Full-text available
The role of hormones during fruit development and ripening in strawberry (Fragaria ananassa) is poorly understood. In this study, two strawberry cultivars ('Jewel' and 'Wendy') were chosen based on their shelf life quality, intermediate and excellent, respectively. Hexanal and growth regulators were applied to the fruit as two pre-harvest sprays. F...
Article
A laboratory study was undertaken to extract nano-fibrillated cellulose (NFC) from the pseudostem (a waste from the fruit harvest) of two commercial banana cultivars ('Grand Naine' and 'Poovan') in Tamil Nadu using a novel approach: a one-step method with a bleaching agent and alkali-free acid hydrolysis coupled with ultrasonication. The acid hydro...
Article
Tomato juice and paste are special type of dispersions, composed of suspended particles (pulp) dispersed in a colloidal liquid medium (serum). The bright red appearance of soluble solid separated by high speed centrifugation denoted the presence of lycopene in this fraction. Since lycopene is a hydrophobic compound it is not expected to appear in t...
Poster
Full-text available
Hexanal and benzaldehyde are naturally occurring plant originated aldehydes, known for their antimicrobial properties. Moreover, hexanal delays cell membrane breakdown in plant tissues by inhibiting phospholipase-D. However, their high volatility and oxidative instability limit their efficacy as antimicrobial agents. To overcome these issues, we sy...
Article
Full-text available
A unique feature of bioactive food ingredients is their broad antioxidant function. Antioxidants having a wide spectrum of chemical structure and activity beyond basic nutrition; display different health benefits by the prevention and progression of chronic diseases. Functional food components are capable of enhancing the natural antioxidant defens...
Article
Full-text available
Raspberry (Rubus spp.) is an economically important crop with a restricted growing season and very limited fruit shelf-life due to its extreme tenderness. In order to prolong its shelf life, an aqueous composition containing hexanal as the key active ingredient (HC) was applied as a preharvest spray during fruit development. The effects of HC were...
Article
Full-text available
Phosphatidylinositol 3-kinase (PI3K) is a key enzyme that phosphorylates phosphatidylinositol at 3’-hydroxyl position of the inositol head group initiating the generation of several phosphorylated phosphatidylinositols, collectively referred to as phosphoinositides. The function of PI3K in plant senescence and ethylene signal transduction process w...
Poster
Full-text available
Hexanal vapor inhibits the growth of spoilage microorganisms on the surface of fruits, as well as delays cell membrane breakdown in plant tissues by inhibiting phospholipase D. However, hexanal is susceptible to oxidative degradation and is volatile (11.3 mm Hg at 25oC), which can pose end-use delivery challenges. In this study, a hexanal precursor...
Article
The role of hormones during fruit development and ripening in strawberry (Fragaria ananassa) is poorly understood. In this study, two strawberry cultivars (‘Jewel’ and ‘Wendy’) were chosen based on their shelf life quality, intermediate and excellent, respectively. Hexanal and growth regulators were applied to the fruit as two pre-harvest sprays. F...
Article
Fruit ripening is a senescence process and phospholipase D (PLD) is a key enzyme causing degradation of membrane phospholipids during that process. Our earlier studies showed that hexanal, is known to inhibit the PLD activity. The objectives were (i) to quantify the effects of postharvest hexanal treatment in mango fruit on physiochemical traits, (...
Chapter
The genus Annona belonging to the Annonaceae family is an important source of edible fruits. Cherimoya, soursop, custard apple, atemoya, and pawpaw are some of the edible fruits bearing commercially important species. The fruits of Annonaceae are climacteric with a short postharvest shelf life. Annonaceous fruits are generally rich in carbohydrates...
Chapter
Botanically, berries are defined as a fleshy fruit that forms from the entire ovary that surrounds the seeds, and true berries include banana, grapes, and blueberries. In this article, the term ‘berries’ refers to the small, soft, edible, and colored fruits of the plants of the species Vaccinium, Fragaria, and Rubus. Berries have been emerging as i...
Chapter
The tomato (Solanum lycopersicum) is one of the most commercially important vegetable cultivated worldwide. Tomato is a member of the nightshade family or Solanaceae that includes more than 3000 species. This family also includes other popular species, such as potato, tobacco, peppers, and eggplant (aubergine). Tomato is the only domesticated speci...
Chapter
Strawberry is one of the most economically important berry fruits consumed for its nutrient content and pleasant flavor. Strawberry is a member of the Rosaceae family and one of the most popularly consumed berries in the world. It is commercially cultivated worldwide for its highly appreciated sweet, aromatic, and juicy fruit. The United States is...
Chapter
Kiwifruit are edible berries of woody vines belonging to the genus Actinidia. Kiwi plants are native of China, and at present, kiwi plants are cultivated commercially in many countries such as Italy, New Zealand, Chile, China, and the United States. Actinidia deliciosa and A. chinensis are the two most commonly cultivated and consumed species. Kiwi...
Chapter
Pine kernels are edible seeds of certain pine species that are marketed as gourmet food. Nuts of various pine species differ substantially in their nutrient profiles, size, taste, and flavor. They are nutritious snacks and are consumed raw or in processed forms. They are also incorporated into a variety of foods. Pine kernels are energy dense food...
Chapter
Potatoes (Solanum tuberosum L.) serve as an inexpensive staple food for the human diet in many parts of the world. Being a carbohydrate-rich and nutrient-dense food with little fat, potato has a crucial role in preventing malnutrition in impoverished regions. Potatoes supply key nutrients including vitamin C, potassium, and resistant starch to the...
Article
Mango is an important tropical fruit extensively consumed by people in several parts of the world and is generally considered as king of fruits by consumers for its sweet taste, exotic flavor, and succulence. Most of the fruits are consumed fresh or as processed products. It is a fruit having high nutritional value, supplying the human diet with ca...
Article
Bananas and plantains serve not only as a fruit crop but also as energy-rich foods in many parts of the world. The diversity in cultivars, production systems, usage either as dessert fruit or as processed products, the range of nutritional contents that the fruits possess, and numerous associated health benefits of the fruits and plant parts that m...
Article
Majority of the tropical fruits are edible and are admired owing to their unique taste and sensory qualities. In recent years, in the world scenario, the chain involving production, transportation, and marketing of tropical fruits has increased tremendously. This article is in continuation with the earlier article and highlights more on the popular...
Article
Citrus fruits are consumed and relished worldwide for its fresh flavor and juiciness. They are grown worldwide. Fruits of citrus genus are endowed with various health-benefiting properties owing to the presence of an array of bioactive components in them. They are well known for their vitamin C, folic acid, and carotenoid content. Besides the essen...
Article
Tropical regions of the world encompass wide biodiversity, harboring an extensive range of exotic fruit-yielding plants. Majority of the fruits obtained are edible and have gained popularity owing to their unique taste, nutraceutical values, sensory qualities, and mouthfeel. Exploiting the potential of underutilized fruit crops can fulfill the basi...
Article
Field experiments were conducted to study the response of mango (var. Alphonso and Banganapalli) to pre-harvest sprays of a nano-emulsion of hexanal (Enhanced Freshness Formulation) in extending retention and shelf-life of fruits. Hexanal, a naturally occurring plant derived compound is known to inhibit phospholipase-D and facilitates extension of...
Article
Full-text available
Colletotrichum gloeosporioides and Lasiodiplodia theobromae, causing anthracnose and stem-end rot are the major post-harvest pathogens of mango worldwide, causing 25-40% post harvest loss globally. The present study was conducted to evaluate the effect of a natural volatile, hexanal, on the mycelial growth and spore germination of C. gloeosporioide...
Article
Full-text available
Postharvest shelf life and quality parameters were evaluated for winter guava fruit cv. 'Allahabad Safeda' that had beensubjected to preharvest sprays during two seasons. To enhance the postharvest shelf life and quality of guava, a novel technology involvingpreharvest spray applications of an aqueous hexanal formulation(EFF-0.01%, 0.015% and 0.02%...
Article
Full-text available
Biological activity of polyphenols is influenced by their uptake, and is highly influenced by their interactions with food matrix. This study evaluated the complex formation of blueberry polyphenols with the fruit matrices such as pectin and cellulose, and its effect on the biological and antiproliferative properties of human colon cell lines, HT-2...
Article
Full-text available
Variations in floral display represent one of the core features associated with the transition from allogamy to autogamy in angiosperms. The promotion of autogamy under stress conditions suggests the potential involvement of a signaling pathway with a dual role in both flower development and stress response. The jasmonic acid (JA) pathway is a plau...