بررسی تاثیر عصاره اتانولی گل و برگ گیاه رازک بر عمر انبارداری و خواص کیفی میوه توت فرنگی

نویسندگان
امیر دارایی گرمه خانی 1
حبیب میرزایی 2
خانی شاکرمی 3
1 استادیار دانشگاه
2 دانش آموخته
3 دکترای علوم باغبانی گرایش فیزیولوژی و اصلاح گیاهان زینتی
10.52547/fsct.17.109.75
چکیده
این مطالعه به منظور بررسی تاثیر عصاره گل و برگ گیاه رازک بر ماندگاری و خصوصیات کیفی میوه توت‌فرنگی انجام شد. تیمارهای مختلف مورد استفاده در این تحقیق شامل عصاره اتانولی گل و برگ گیاه رازک در غلظت‌های 25، 50 و 100 درصد، سم دیازینون در غلظت‌های 100 و ppm 200 و تیمار شاهد (ppm 0) بودند. صفات مورد بررسی شامل میزان مواد جامد محلول کل، pH آب میوه، اسیدهای قابل تیتراسیون، شاخص طعمی میوه، خواص چشایی و ویژگی‌های حسی میوه و نیز بار میکروبی میوه طی دوره انبارداری بود. نتایج نشان دادند استفاده از عصاره‌های گل و برگ گیاه رازک و نیز سم دیازینون تاثیر معنی داری بر میزان pH نمونه‌های توت‌فرنگی نداشت و در مقایسه با تیمار شاهد باعث حفظ بهتر میزان اسید قابل تیتراسیون در طول دوره انبارداری شده بودند (05/0p>). میزان مواد جامد محلول کل نمونه‌های توت‌فرنگی با افزایش زمان انبارداری روند نزولی داشتند در حالی که با افزایش غلظت عصاره گل و برگ رازک میزان مواد جامد محلول کل افزایش یافت که در مقایسه با هر دو غلظت مورد استفاده از قارچ کش دیازینون نتایج بهتری در ممانعت از افزایش بریکس میوه‌ها ارائه داده‌اند. نمونه‌های توت‌فرنگی تیمار شده با عصاره گل و برگ گیاه رازک در مقایسه با سایر نمونه‌ها به لحاظ کیفیت ظاهری، درخشندگی، رنگ و کیفیت بافتی امتیاز بالاتری را طی ارزیابی حسی کسب کردند. بررسی نتایج میکروبی نیز توانایی عصاره‌های گل و برگ گیاه رازک در ممانعت از فساد میکروبی میوه توت‌فرنگی در مقایسه با سم دیازینون را نشان داد. با توجه به نتایج به دست آمده از آزمایشات مختلف شیمیایی، میکروبی و حسی می‌توان عصاره گل و برگ گیاه رازک را به عنوان جایگزین قارچ کش‌های رایج مورد استفاده در نگهداری میوه توت‌فرنگی معرفی نمود.
کلیدواژه‌ها
عصاره گل و برگ گیاه رازک
میوه توت فرنگی
خواص کیفی
عمر انباری

موضوعات

عنوان مقاله English

Investigation of the effect of flower and leaf ethanolic extract of Humulus lupulus plant on the shelf life and quality attributes of strawberry fruits

نویسندگان English

Amir Daraei Garmakhany 1
habib mirzaei 2
Khani Shakarami 3
1 Assistant professor
2 graduated student
3 PhD of Horticultural sciences, physiology and ornamental plant breedin.
چکیده English

This study was conducted to determine the effects of flower and leaf extract of Humulus lupulus plant on the shelf life and quality attributes of strawberry fruits. Different treatments were applied in this research including: flower and leaf ethanolic extract of Humulus lupulus plant at concentration of 25, 50 and 100 percent, diazinon fungicide at concentration of 100 and 200 ppm and blank samples (0 ppm). Different quality attributes including: total soluble solids, fruit juice pH, titratable acidity, flavor index of fruit, sensory attributes and total microbial counts of fruits were measured during storage periods. The results showed that application of the flower and leaf extract of Humulus lupulus plant and diazinon fungicide had no significant effect on the pH value of strawberry fruits but maintained the titratable acidity during storage periods compared to the blank samples (p>0.05). Total soluble solid content of strawberry fruits was decreased with increase of the storage time but increased with increase of the flower and leaf extract of Humulus lupulus plant concentration and compared to applied concentration of diazinon fungicide (tow concentration) lead to better brix content maintenances. Treated strawberry samples with the flower and leaf extract of Humulus lupulus plant compared to other samples obtained the higher score in case of appearance, color and texture during sensory evaluation. Microbial evaluation results, showed the ability of the flower and leaf extract of Humulus lupulus plant in microbial spoilage inhibition compared to the diazinon fungicide. According to the obtained results from different chemical, microbial and sensory evaluations, the flower and leaf extract of Humulus lupulus plant can be introduced as replacer of the common fungicide applied in strawberry preservation.

کلیدواژه‌ها English

Flower and leaf extract of Humulus lupulus plant
Strawberry fruit
Quality attributes
Storage life
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