Showing posts with label food processing. Show all posts
Showing posts with label food processing. Show all posts

Wednesday, June 2, 2010

CHALLENGE OF THE "JACK"-MILES TO GO!


A recent report in some news papers regarding the "original" work done in a University on processing of Jack fruit, the "largest tree borne fruit on earth", can evoke only some amusement because the researchers there have "developed" a series of mouth watering products from this fruit. These include srikhand, kulfi, wine and jam. Considering that Jack fruit has a history of 6000 years behind it, one can only wonder why no one had thought about making these products so far, leaving the task to a bunch of students in a University. The fruit growing as large as 35 kg in weight is a veritable bundle of sweetness and highly aromatic flavor, bordering on repugnance, liked or hated, depending on the people who consume them. The three main varieties that grow widely in different parts of the world vary mainly in the texture of the fruit bulb, hard to soft and pulpy.

Being a fruit rich in sugar the deseeded fruit bulbs can be converted into more than two dozen products at home though commercially only canned bulbs are made in very limited quantities, that too for export markets. While unripe fruits are consumed as a vegetable and for frying into chips like products popular in Kerala, ripe fruits, mostly available during March-August every year, coinciding with monsoon rains, are consumed fresh without any processing. It is a common sight to see road side vendors offering dressed bulbs on push carts in many cities in the South. Traditionally the fruit bulbs, after cutting into small pieces, are used to make a variety of preparations at home. The fruit bar made from the ripe Jack by sun drying, mostly in southern part of Karnataka, is an established product with good shelf life, being liked by many with its typical texture and mild flavor. A new product made by vacuum frying of semi ripe bulbs has been introduced recently and has found wide acceptance in the market.

There is no known orchard cultivating this fruit under controlled growing conditions as very little data is available on favorable inputs that can ensure maximum productivity. As it takes about 30 years for the tree to mature, Jack fruit never offers itself as an alternative to any of the existing economic crops. It is a tree that requires once in a life time investment, that too one's time to plant it and rest is taken care of by nature. High investment on Jack fruit is fraught with uncertainties in terms of yield, perishability, demand and marketing. Organizing cooperatives is also difficult because of these reasons.

Two biggest challenges in harnessing the goodness of Jack fruit for commercial operation are lack of standardization of fruit quality and logistical problems in extracting the edible portion under large scale processing. As only 25% yield can be expected, the waste generated also will pose problems of disposal. Most critical constraint is the presence of gummy latex in the whole fruit which can pose tremendous challenge for food engineers to design an appropriate gadget for extracting the edible part for achieving viable production volume under factory conditions. In one way it is better if mechanical gadgets are not invented because that can be a strength in a country like India where human resources are supposed to be available in plenty. Successful cooperative models for beedi making or papad manufacture, can be replicated to collect, process and make marketable products from Jack fruit for which initiative has to come from horticulture departments of some of the Southern states where the fruit is available in abundance.
V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com

Friday, December 11, 2009

VISION 2015-THE FOOD "DREAMS"!

The "Vision 2015" has now become the official version of GOI proclaiming the intention of the country to give a boost to the food processing sector. The contour of the projections contained in the Vision document was known for some time but with the Lok Sabha taking cognizance of the plans projected by MFPI, it is time to get down to the "bolts and nuts" details for achieving the dream targets set forth,to be achieved in 5 years

According to the statement made by the Minister for Food Processing Industries, GOI, Mr S. K. Sahay in the Lok Sabha, his ministry's "Vision 2015" plan envisages tripling the size of the processed food sector by increasing the level of processing of perishables from 6 percent to 20 percent, an herculean task indeed. It further projects to increase the value addition from 20 percent to 35 percent and boost the share of Indian food exports in the global food trade from 1.5 percent to 3 percent within 5 years. There is a fair amount of word play in the document using niche words like "integrated strategy", "vision to promote agribusiness", "strategy and action plan" for the food-processing sector, etc which do not mean anything.

Five year period is too short to achieve any thing substantial, especially in a country like India where a conducive atmosphere for unhindered growth of food industry still does not exist. A more appropriate approach would have been to evolve a "Vision 2025" mission with sufficient provision for periodic mile stones to be reached. There is a perception amongst foreign investors that too much bureaucratic control and unbearable red tapism make India a miserable destination for investment. Putting in place a transparent and truly free environment with minimum centralized control can only provide sufficient impetus for growth of any industry. Government must confine itself to only protecting the consumer from economic exploitation and the dangers of unsafe foods. Provide the right atmosphere and see how the private sector will respond and flourish.

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com

Friday, October 9, 2009

FOOD "R & D" INDICTED-WILL THE CULPRITS GET AWAY?


Ever since independence, modernization of Indian food industry was one of the priorities of GOI with major emphasis on rice milling and dal milling, the intention being increasing the yield of edible materials through improved processing. Emphasis later shifted to import substitution with a feverish pitch and R & D organizations were mandated to evolve products and processes indigenously. It was during eighties and nineties that food industry became visible and opening up the economy brought in many global players to India, making indigenous R & D more or less irrelevant with imported technologies and plants available with out any import restrictions.

During the last 3 decades there have been cries of desperation from many stake holders regarding the unimaginary policy flip-flops, unhelpful fiscal initiatives, archaic licensing system and massive neglect of infrastructure. It is rather funny to hear from no less a person than the Prime Minister of India to repeat the same after 62 years of independence.Listen to what he said at a recent conference of state food ministers at Delhi. "Prime Minister Manmohan Singh Tuesday called for strengthening research and development (R&D) in the country's food processing industry with the Central Food Technology and Research Institute (CFTRI) playing a more proactive role. While basic agricultural research has a very strong and large institutional network in the country, there is little focus on the food processing sector," It is a pity that PM was not even briefed regarding the exact name of the Institute and one wonders whether he had ever any idea of its working. What is intriguing is why he has talked only about CFTRI alone and not others who are supposed to do research on foods. What about his own brand new "baby" NIFTEM, touted as the answer for country's ills vis-à-vis food industry when it was launched a couple of years ago? A CEO has the responsibility not only to exhort his people to raise their productivity but also wield the stick on those who are shirkers.

Who is to be blamed for this sorry state of affairs? GOI, for not focusing on processing as a means of preventing food wastage, industry for not orchestrating their needs forcefully or the food scientists for their purposeless research without trying to understand what is relevant to country's needs?. It is indeed a pathetic commentary on the sad state of affairs of food R & D in the country when country's top executive says that it has not played a "pro-active" role and literally meaning that investments running to more than Rs 300 crore during the last 15 years have gone down the drain! This state of affairs is bound to continue unless those responsible are made to pay for the colossal waste of public money!
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com

Friday, April 24, 2009

PULSED ELECTRIC FIELD-APPLICATION IN FOODS



It was striking to read a claim in the print media recently that a scientific group in India was able to get an international patent covering 120 countries for a process "sterilization of liquid foods by pulsed electric fields". If technically and commercially feasible, beyond any shadow of doubt, this process can revolutionize the milk and juice industry in the country. What practical problems that may arise can be known only when the process is scaled up into a fully baked industrial scale technology with necessary engineering designs for the critical original equipment necessary for its success. According to the claims by the Indian scientists a liquid food like juice or sauce, when passed through a specially designed fluid treatment chamber with provision for generating a short pulse at very high voltage, it was able to kill bacteria, molds and their spores and viruses. Basically the high voltage is supposed to disrupt the cell membrane through the phenomenon of electroporation.

In Pulsed Electric Field processing (PEF), a substance is placed between two electrodes and pulsed electric field is applied. The effect is to enlarge the pores on the cell membrane which kills the cells and releases their contents into the environment. All cells have pores which control the flow of nutrients into, and metabolic wastes out of, the cell. If these pores become wider and larger, the contents can leak into the medium, eventually killing the cell. The temperature rise in such a system due to the electric field is less than 30C and therefore the material treated does not even attain the pasteurization temperature sufficient to kill pathogens by heat alone, The voltage applied can be between 15000 to 30000 volts, where the lower voltage can kill plant cells while the higher voltage brings about the death of bacterial and fungal cells. How this technology can immobilize viruses, as claimed by the Indian scientists is not clear. Also in doubt is the ability of this process to obtain 100% kill of the spores which have very tough membranes that can survive high voltages.

Though useful information about PEF technology started emerging in 1991 and early patents on pulse electric field for sterilization and preservation of liquid foods (US Patents5235905, 5690978 and 6746613) were already granted in the US, it has failed to take off due to certain practical problems when tried on a commercial scale. This technology is used to a very limited extent by the fruit juice industry in the US. Most enzymes are not affected by pulsed electric field which can cause deterioration in the juice under ambient conditions and therefore to preserve the organoleptic quality, the treated products will have to be refrigerated during marketing, up to the point of consumption. Gas bubbles which are trapped in the juice during extraction tend to allow electric arcing between the electrodes causing burning of the substances being processed and consequent generation of potential carcinogenic artifacts.

The media reports convey the impression that PEF technology has been perfected for the first time in India and is ready for commercial use. On the contrary much more work needs to be done to standardize the process for tropical fruit and vegetable products popular in the country. Milk could be the most eligible candidate for mass application of this technology but practically no information is available regarding its suitability in a complex protein-fat matrix like milk. Stray reports do indicate that application of PEF in tandem with heating can extend shelf life of milk up to 24 days. Imagine the advantages for a middle class consumer when the milk sachet which arrives unfailingly every day in front of his house, can be kept under ambient condition or even in a refrigerator for at least a week or more. This is where efforts are called for as India is world's largest milk producer and a major portion is consumed as fluid milk in millions of house holds across the country. Here is a typical example of a patent being touted as the ultimate in non-thermal sterilization but with out any solid data regarding its applicability, efficacy and safety on Indian products. It is sad that good scientific work like this, with potential for far reaching benefits to the society, gets trivialized by premature publicity and bloated claims.

V.H.POTTY
http://vhpotty.blogspot.com/

Sunday, January 25, 2009

INTELLECTUAL PROPERTY OR INTELLECTUAL PERVERSITY?


Intellectual property rights or more commonly known as patent rights are recognized rights of every citizen in the world but the pre-requisites for granting a patent are supposed to be tedious and time consuming. But with GOI becoming a member of WTO and after opening up of the economy in early nineties, patent activities have received a new boost and hundreds of patents are being applied for, in all areas of science, technology and engineering within the country as well as in other countries. Conceived originally to protect the economic returns that can be expected from commercialization of patents, lately the system has been subverted for enriching the bio-data of a few people with least consideration for their commercial potential. In other words patents are becoming synonymous with literary publications and the quantity has taken precedence over quality. There is a feeling that many patents are prepared not based on scientific work but concocted, sitting before a computer and if this is true it only reflects on the failure of the system of patenting in this country. In the field of food technology if a dispassionate analysis of the patents filed during the last one decade are made, one will find it difficult to identify even a single one that has been successfully exploited by any major industry!

Here is an example of a fictitious patent that can be drafted sitting before a computer for some time:
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Title-Discovery of food products that can delay diseases in human beings

Author- Dr Vishwa Kiran with hundreds of patents already in pocket, about to enter into Guinness World Records, Limca Book of Records and other record keeping organizations, member of 'many' national, notional and 'some' international organizations, 'widely' decorated, quoted and photographed, specialist in inauguration speeches, special lectures, key note addresses, presidential thoughts, guest appearances in public platforms, specialist in 'getting' awards where ever available at 'any cost' through any means, special ability to survive personal set backs more than that of a cat which has only 9 lives, superb quality of reaching the perch in organizations through high PR techniques, single minded devotion in pursuing and demolishing opposition and extra ordinary capacity to be on the right side of any one with political power. No hesitation in advocating in public forums that " patents should be aimed at society's welfare" and set an example "single handed" through various patents filed in the past, that can be a proud possession of any museum.

The product-Foods made from a plant called Fraudulis vipranam discovered recently ( patent pending )

The invention in brief- The above species of plant discovered by the same author, growing abundantly at elevations of 3000 ft above sea level has parts like roots, stem, leaves, flowers and the fruits having phytochemical constituents (identified and patented separately) which are processed by separate processes into RTE products ( process patents pending) that can be consumed to delay on-set of various diseases in human beings. It is claimed that:

-the product made from roots increase synthesis of cyclic AMP which in turn peps up the metabolism and delays the disease psoriasis by several days
-the product made from the leaves has several phytochemicals including salicylic acid and delays development of high blood pressure conditions in people above the age of 60 years by several weeks
-the product made from the stem is excellent for delaying cancer by a few months if taken three times a day at the dosage level standardized
-the flowers are processed into a dry powder which delays the disease diverticular disease by two years in people below 40 years when consumed at 50 g level every day before going to bed.
-the bright yellow fruits about 5 mm in size are processed into a jam like product which if consumed every day will delay the onset of diabetes in population above seventy years

The author of this patent has filed a dozen separate applications for patents for growing the plant under different conditions and another dozen patents for new plants developed through cell culture, tissue culture, recombinant DNA technique and conventional hybridization process which have higher potency and longer effect.
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In all probability the above material can be converted into a convincing patent application with the help of an expert patent lawyer. It is very difficult for any patent examiner to verify the technical contents and determine the innovative aspects of a patent application filed like the above one and with practically no one interested in filing objections to the claims, it gets a number which will adorn the bio-data of the author. Interestingly some patent holders publish the material in respected journals after a couple of years getting a double advantage! There are many good scientists who spend their life time in doing high quality research and go for patents based on their work to provide technology to the industry, unlike the example illustrated above. Proof of a good patent is when entrepreneurs see commercial potential in it and buys the same at reasonable cost. It is not the intention here to tar the entire scientific community for patent frauds but a few who commit such heinous crime must be ostracized for their activities.

The issue regarding patenting food products and processes was not properly considered before India accepted the WTO protocols and to add to the misery of Indian entrepreneurs, Ministry of Science and Technology encouraged large scale patenting activities in all areas. With no guidelines for pricing of patents it was left to the patent rights holders to decide on selling them which invariably resulted in over pricing, denying a large segment of the food industry, the ultimate users, the benefits of public funded R & D. Those who could muster enough resources to purchase the patents were left in the lurch as wide disparities appeared between the claims and the performance.

India must stop the practice of patents in public funded institutions unless it involves national security and unjust exploitation of Indian resources by foreign companies. The patents on turmeric and other native spices and Basmati are examples of protecting the country's unique heritage foods. While domestic entrepreneurs are provided free access to the patents, foreign companies can be charged for accessing to the technology covered by food patents. The recent nation wide IPO awareness campaign is a classic example of our dichotomy in preaching but not practicing what is preached! The organizers of this program must ask themselves some questions as to whether any one of them had bought any Indian Patent in food products and processing technology during the last 15-20 years, if so whether the products have been put in the market and how much royalty they had paid to the scientists, while preaching about the virtues of patenting!

V.H.POTTY
http://vhpotty.blogspot.com/